KR20220064280A - Method and apparatus for providing captcha system - Google Patents

Abstract

The present disclosure relates to a method and a device for authenticating a user using a CAPTCHA. The method of the present invention comprises the steps of: determining a correct answer pattern formed in one or more correct answer directions; generating an animation of an arrow object rotated while having a movement distinguished from other directions in relation to the correct answer directions, with respect to each of the correct answer directions; displaying a CAPTCHA interface including an array of the generated animation corresponding to the correct answer pattern; receiving a direction input from a user; and determining whether to authenticate the user as a result of comparing the received direction input with the correct answer pattern. Therefore, a more effective method for determining an automated program distinguished from a human is provided.

Description

Method and apparatus for providing a CAPTCHA system {METHOD AND APPARATUS FOR PROVIDING CAPTCHA SYSTEM}

The present disclosure relates to a method and apparatus for providing a CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) system. More specifically, it relates to a method and an apparatus for generating an animation-based direction input CAPTCHA and authenticating a user based thereon.

CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a question-and-answer test automatically managed by a computer, and is a test that determines whether a user is a human or a machine. CAPTCHA is used to restrict the use of automated programs such as bots to information or services, and to allow access only to human users. For example, a game service provider that provides an online game service authenticates the user by the CAPTCHA system while the user plays the game in order to detect and punish abnormal users who use a program that automatically performs game contents without user input can request As another example, CAPTCHA may be used to prevent spam of online bulletin boards or webmails, prevent automatic membership registration, and prevent online voting manipulation.

The CAPTCHA system includes a device or process that requests an answer by automatically generating a question that a human can easily answer but a computer is difficult to answer. Respondents who enter the correct answer to a question are considered human. On the other hand, a respondent who did not enter the correct answer is considered a machine. A frequently used CAPTCHA system, for example, outputs an image including a character string on the screen, and requests to input the character string included in the image. Character strings included in images are difficult for machines to recognize, but can be distorted so that humans can recognize them relatively easily.

However, with the recent development of computing devices and image recognition technology, the cases in which automated programs avoid image-based CAPTCHA are increasing. For example, an automated program that attempts to avoid CAPTCHA may include a process of analyzing an image provided by the CAPTCHA system to remove distortion, and detecting and automatically inputting a character string from the image from which the distortion has been removed.

Therefore, in order to protect information and services from such automation programs, a more improved method for distinguishing between machines and humans is required.

An object of the present disclosure is to provide a method and apparatus for generating an animation-based direction input CAPTCHA and authenticating a user based thereon.

According to various embodiments of the present disclosure, the method comprising: determining a correct answer pattern configured in at least one correct answer direction; generating, for each of the at least one correct answer direction, an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction; displaying a CAPTCHA interface including an arrangement of the generated animation corresponding to the correct answer pattern; receiving a direction input from a user; and determining whether to authenticate the user according to a result of comparing the received direction input with the correct answer pattern.

According to an embodiment, the at least one correct answer direction may be determined as one of up, down, left, and right, respectively.

According to an embodiment, each of the at least one correct answer direction may be determined in an arbitrary direction.

According to an embodiment, the correct answer pattern may include a predetermined number of correct answer directions, and the CAPTCHA interface may include animations of the predetermined number of arrow objects.

According to an embodiment, the generating of the animation may include: generating frames constituting an animation in which the arrow object rotates at a constant speed; and deleting the arrow object from a frame when the arrow object points to the correct answer direction to generate an animation that blinks when the arrow object points to the correct answer direction. may include

According to an embodiment, the generating of the animation may include: generating frames constituting an animation in which the arrow object rotates at a constant speed; and inserting a frame additionally when the arrow object points in the correct answer direction to generate an animation that temporarily stops when the arrow object points in the correct answer direction. may include

According to an embodiment, the generating of the animation may include: generating frames constituting an animation in which the arrow object rotates at a constant speed; and inserting a frame before or after the time point when the arrow object points to the correct answer direction to generate an animation that rotates at a speed slower than the constant speed when the arrow object points in the correct answer direction. may include.

According to an embodiment, the generating of the animation may include: generating frames constituting an animation in which the arrow object rotates at a constant speed; and reversing the order of front and rear frames when the arrow object points to the correct answer direction in the animation to generate an animation that shakes when the arrow object points to the correct answer direction; may include.

According to an embodiment, the generating of the animation includes: a first arrow object rotating with a movement distinguished from other directions in the correct answer direction, rotating at a speed different from that of the first arrow object, and the first arrow object generating an animation including a second arrow object overlapping with ; may include.

According to an embodiment, the second arrow object may be different from the first arrow object in at least one of hue, saturation, and transparency.

According to an embodiment, the second arrow object may have the same hue, saturation, and transparency as the first arrow object.

According to an embodiment, the receiving of the direction input may include receiving the user's direction input through a direction key of a keyboard.

According to an embodiment, the CAPTCHA interface includes a direction input interface for receiving a direction input, and the receiving of the direction input includes a user input of clicking or touching a point pointing to a direction through the direction input interface. It may include the step of receiving

According to various embodiments of the present disclosure, a display; user input unit; a memory for storing instructions; and at least one processor operatively connected to the display, the user input unit, and the memory and configured to execute the instructions. An electronic device for authenticating a user using a CAPTCHA is provided. The at least one processor executes the instructions to determine a correct answer pattern composed of at least one correct answer direction, and has a movement that is distinguished from other directions in relation to the correct answer direction for each of the at least one correct answer direction An animation of a rotating arrow object is generated, and a Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) interface including an arrangement of the generated animation corresponding to the correct answer pattern is displayed through the display, and the It may be configured to receive a direction input from the user input unit and determine whether to authenticate the user according to a result of comparing the received direction input with the correct answer pattern.

According to an embodiment, the at least one correct answer direction may be determined as one of up, down, left, and right, respectively.

According to an embodiment, each of the at least one correct answer direction may be determined in an arbitrary direction.

According to an embodiment, the correct answer pattern may include a predetermined number of correct answer directions, and the CAPTCHA interface may include animations of the predetermined number of arrow objects.

According to an embodiment, the at least one processor generates frames constituting an animation in which the arrow object rotates at a constant speed, and deletes the arrow object from a frame at a time point when the arrow object points to the correct answer direction. , it may be set to generate a blinking animation when the arrow object points in the correct direction.

According to an embodiment, the at least one processor generates frames constituting an animation in which the arrow object rotates at a constant speed, and additionally inserts a frame at a point in time when the arrow object points in the correct direction, It may be set to generate an animation that temporarily stops when the arrow object points in the direction of the correct answer.

According to an embodiment, the at least one processor generates frames constituting an animation in which the arrow object rotates at a constant speed, and additionally inserts a frame before or after a point in time when the arrow object points in the correct direction. , it may be set to generate an animation that rotates at a speed slower than the constant speed when the arrow object points in the correct direction.

According to an embodiment, the at least one processor generates frames constituting an animation in which the arrow object rotates at a constant speed, and determines the order of the front and rear frames when the arrow object points to the correct direction in the animation. Inverted, it may be set to generate a shaking animation when the arrow object points in the correct direction.

According to an embodiment, the at least one processor includes: a first arrow object rotating with a movement distinguished from other directions in the correct answer direction; It may be set to generate an animation including an overlapping second arrow object.

According to an embodiment, the second arrow object may be different from the first arrow object in at least one of hue, saturation, and transparency.

According to an embodiment, the second arrow object may have the same hue, saturation, and transparency as the first arrow object.

According to an embodiment, the user input unit may include a keyboard, and the at least one processor may be configured to receive a direction input from a user through a direction key of the keyboard.

According to an embodiment, the CAPTCHA interface includes a direction input interface for receiving a direction input, and the at least one processor receives a user input of clicking or touching a point pointing to a direction through the direction input interface. can be set to

According to various embodiments of the present disclosure, a communication unit for receiving a user authentication request from a server; display; user input unit; a memory for storing instructions; And there is provided a user terminal for authenticating a user using a CAPTCHA comprising at least one processor that is functionally connected to the communication unit, the display, the user input unit, and the memory, and is configured to execute the instructions. The at least one processor executes the instructions to determine a correct answer pattern consisting of at least one correct answer direction based on the user authentication request, and, for each of the at least one correct answer direction, in relation to the correct answer direction CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) interface that generates an animation of an arrow object that rotates with movement distinct from other directions, and includes an arrangement of the generated animation, corresponding to the correct answer pattern Display through the display, receive a direction input from the user input unit, determine whether to authenticate the user according to a result of comparing the received direction input and the correct answer pattern, and control the communication unit to determine whether the user is authenticated It may be set to transmit to the server.

According to various embodiments of the present disclosure, the method comprising: determining a correct answer pattern configured in at least one correct answer direction; generating, for each of the at least one correct answer direction, an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction; displaying a CAPTCHA interface including an arrangement of the generated animation corresponding to the correct answer pattern; receiving a direction input from a user; and determining whether to authenticate the user according to a result of comparing the received direction input and the correct answer pattern; a computer program stored in a medium to execute a user authentication method using CAPTCHA in combination with hardware, including a computer program provided

According to various embodiments of the present disclosure, the method comprising: determining a correct answer pattern configured in at least one correct answer direction; generating, for each of the at least one correct answer direction, an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction; displaying a CAPTCHA interface including an arrangement of the generated animation corresponding to the correct answer pattern; receiving a direction input from a user; and determining whether to authenticate the user according to the result of comparing the received direction input and the correct answer pattern do.

According to various embodiments of the present disclosure, a method and apparatus for authenticating a user using a CAPTCHA may be provided.

According to various embodiments of the present disclosure, a more effective method of distinguishing an automated program from a human may be provided.

1 illustrates a service providing system including a server and a user terminal, according to various embodiments of the present disclosure.
2 is a diagram for describing a system for authenticating a user using a CAPTCHA, according to various embodiments of the present disclosure.
3 is a flowchart of a method of authenticating a user using a CAPTCHA, according to various embodiments of the present disclosure.
4 is a diagram for describing a CAPTCHA interface according to various embodiments of the present disclosure.
5 is a diagram for explaining a method of generating an animation of an arrow object, according to an embodiment of the present disclosure.
6 is a diagram for describing a method of generating an animation of an arrow object according to another embodiment of the present disclosure.
7A to 7D are diagrams for explaining an operation of a CAPTCHA interface according to an embodiment of the present disclosure.
8 is a diagram for explaining a method of generating an animation of an arrow object according to another embodiment of the present disclosure.
9 is a diagram for describing a method of generating an animation of an arrow object according to another embodiment of the present disclosure.
10 is a diagram for describing a CAPTCHA interface according to various embodiments of the present disclosure.
11 is a diagram for describing a CAPTCHA interface according to various embodiments of the present disclosure.
12 is a diagram illustrating an embodiment using a CAPTCHA interface of the present disclosure.
13 is a diagram illustrating another embodiment using a CAPTCHA interface of the present disclosure.
14 is a diagram for describing a detailed configuration of an electronic device according to various embodiments of the present disclosure;
15 is a diagram for describing a detailed configuration of a server according to various embodiments of the present disclosure.
16 is a diagram for describing a detailed configuration of a user terminal according to various embodiments of the present disclosure.

Hereinafter, exemplary embodiments according to the present invention will be described in detail with reference to the contents described in the accompanying drawings. In addition, a method of configuring and using an electronic device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The same reference numbers or reference numerals in each figure indicate parts or components that perform substantially the same functions.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. The term 'and/or' includes a combination of a plurality of related items or any one of a plurality of related items.

The terms used herein are used to describe the embodiments, and are not intended to limit and/or limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this application, the terms include or have is intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features, number, step , it should be understood that it does not preclude in advance the possibility of the presence or addition of an operation, component, part, or combination thereof.

Throughout the specification, when it is said that a certain part is connected to another part, this includes not only a case in which it is directly connected, but also a case in which it is electrically connected with another element interposed therebetween. Also, when it is said that a part includes a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, terms such as "...unit" and "module" described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software. .

In the present disclosure below, the meaning that the server controls the user terminal means that the server outputs from the user terminal through communication with the user terminal (all output devices in the user terminal such as screen display, sound output, vibration output, lamp light emission) and providing data for the user terminal to perform a predetermined operation. Of course, the user terminal may control the output from the user terminal by using pre-stored data, and the example is not limited thereto.

In the present disclosure below, the meaning of transmitting and receiving information or data with a user (or user account) may include the meaning of transmitting and receiving information or data with a device (or user terminal) corresponding to or interlocked with the user (or user account). .

In the present disclosure, the user account corresponding to the user terminal in the present disclosure may include a user account that logs in or accesses a service through the user terminal and a user account in which the user terminal stores information. In addition, the user terminal of the user account may mean a user terminal to which a user account is logged in, user account information is stored, or a user account is accessed.

In the present disclosure below, a user, a player, a user, and a user account may be used as the same meaning. It should be understood that a user terminal in the present disclosure may refer to a user, a player, a user, a user account, or a device used by them, depending on the context. It should be understood that, in the present disclosure, a user, player, user, or user account may refer to an avatar or character they manipulate, or a device used by them, depending on the context.

1 illustrates a service providing system including a server and a user terminal according to various embodiments of the present disclosure.

The system 100 of the present disclosure may include a server 170 and at least one user terminal 110 to 160 . The server 170 may provide services including various online activities through a network. The server 170 may simultaneously provide online activities to at least one user terminal 110 to 160 .

According to an embodiment of the present disclosure, the server 170 may include a single server, a group of servers, a cloud server, and the like, and is not limited thereto. The server 170 provides various online activities and may include a database for storing data for online activities. In addition, the server 170 may include a payment server that generates and processes a payment event. In one embodiment, the server 170 may be a game providing device.

According to an embodiment of the present disclosure, a network means a connection established (or formed) using all communication methods, and means a communication network connected through all communication methods for transmitting and receiving data between a terminal and a terminal or between a terminal and a server can do.

All communication methods may include all communication methods such as communication through a predetermined communication standard, a predetermined frequency band, a predetermined protocol, or a predetermined channel. For example, it may include a communication method through Bluetooth, BLE, Wi-Fi, Zigbee, 3G, LTE, ultrasound, etc., and may include all of short-distance communication, long-distance communication, wireless communication, and wired communication. Of course, it is not limited to the above example.

According to an embodiment of the present disclosure, the short-range communication method may mean a communication method in which communication is possible only when a device (terminal or server) performing communication is within a predetermined range, for example, Bluetooth, NFC and the like may be included. The long-distance communication method may refer to a communication method in which a device performing communication can communicate regardless of a distance. For example, the long-distance communication method may mean a method in which two devices performing communication through a repeater such as an AP can communicate even when the distance is greater than a predetermined distance, and a cellular network (3G, LTE) such as SMS and telephone The communication method used may be included. Of course, it is not limited to the above example. The meaning of receiving the online activity using the network may include the meaning that communication between the server and the terminal can be performed through all communication methods. In an embodiment, information transmitted and received between the user terminal 110 and the server 170 may be encrypted.

Throughout the specification, the at least one user terminal 110 to 160 refers to a personal computer 110 , a tablet 120 , a cell phone 130 , a notebook 140 , a smart phone. In addition to the TV 160, it may include various electronic devices such as Personal Digital Assistants (PDA), Portable Multimedia Player (PMP), navigation, MP3 player, digital camera, refrigerator, washing machine, vacuum cleaner, and the like. Examples are not limited. In an embodiment, the at least one user terminal 110 to 160 may be a game providing device.

According to an embodiment of the present disclosure, the online activity may include an online game, a portal service, and a social network service (SNS), but is not limited to the above example. In addition, the online game may include various genres such as sports, MMORPG, AOS, FPS, TCG, and CCG. In addition, the online game may be a game in which a user and a user face each other, or a game in which the user and a computer (eg, artificial intelligence) face off against each other. It may also be a game of construction or decoration rather than confrontation. Of course, it is not limited to the above example, and there is no limitation on the form of the online game.

According to various embodiments of the present disclosure, the server 170 may attempt to use a service or may request user authentication from the user terminals 110 to 160 that are using the service. The server 170 may allow the user to use the service, block the user's access to the service, or request re-authentication from the user based on the user authentication result of the user terminals 110 to 160 .

According to various embodiments of the present disclosure, the user terminals 110 to 160 may request the user to perform user authentication using the CAPTCHA based on receiving the user authentication request from the server 170 . In one embodiment, the user terminals 110 to 160 determine a correct answer pattern composed of at least one correct answer direction, and, for each of the at least one correct answer direction, perform a movement that is distinguished from other directions in relation to the correct answer direction. Generates an animation of an arrow object rotating with the object, displays a CAPTCHA interface including an arrangement of the generated animation corresponding to the correct answer pattern, receives a direction input from a user, and receives the received direction input and the correct answer pattern Based on the comparison result, it is possible to determine whether to authenticate the user. The user terminals 110 to 160 may transmit the user authentication result to the server 170 .

In another embodiment, the user terminals 110 to 160 may determine that user authentication is required without a request from the server 170 , and may request the user to perform user authentication using CAPTCHA. The user terminals 110 to 160 may allow the user to use the service or block the user from using the service according to the user authentication result.

2 is a diagram for describing a system for authenticating a user using a CAPTCHA, according to various embodiments of the present disclosure.

Referring to FIG. 2 , a system for authenticating a user using CAPTCHA may include a user terminal 110 and a server 170 . The user terminal 110 is an electronic device that provides an online activity provided by a server to a user, and may correspond to the user terminals 110 to 160 of FIG. 1 . In various embodiments, the user terminal 110 may include a CAPTCHA generator 230 , a display 250 , a user input unit 270 , and a user authentication unit 290 .

The server 170 may correspond to the server 170 of FIG. 1 as a server device providing a service. In various embodiments, the server 170 may include a user authentication request unit 210 and a user authentication unit 295 .

The user authentication request unit 210 may determine that user authentication is required for a user who attempts to use a service or is using a service. In an embodiment, the user authentication request unit 210 may request user authentication when a user logs in to a service. In an embodiment, the user authentication requesting unit 210 may request user authentication when the user performs a preset online activity that requires user authentication.

In an embodiment, the user authentication request unit 210 may request user authentication when it is determined that the user is suspected of being a machine. For example, the user authentication request unit 210 may detect an abnormal activity of the user in real time, and request user authentication from the user whose abnormal activity is detected. Abnormal activity of the user includes the user performing a large amount of online activity within a short period of time, the user repeating the same action, the user's account value fluctuating rapidly, the user changing the account information, or other suspected abnormal user activity. There may be transactions with users, and the like. Of course, it is not limited to the above example.

The CAPTCHA generation unit 230 may generate a CAPTCHA for determining whether the user is a human or a machine in response to the user authentication request received from the user authentication request unit 210 . According to various embodiments of the present disclosure, the CAPTCHA generator 230 may generate a direction input CAPTCHA based on animation.

In various embodiments, the CAPTCHA generator 230 may determine a correct answer pattern configured in at least one correct answer direction. In an embodiment, the correct answer pattern may be a direction arrangement configured by a combination of a plurality of directions. In an embodiment, the correct answer pattern may consist of a predetermined number of correct answer directions.

In various embodiments, the CAPTCHA generator 230 may generate an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction for each of the at least one correct answer direction. In an embodiment, the CAPTCHA generator 230 may generate animations of a predetermined number of arrow objects, each corresponding to a predetermined number of correct directions.

In various embodiments, the CAPTCHA generator 230 may generate an animation in which each arrow object rotates at a constant speed and takes a predetermined and distinct movement when pointing in the correct direction. In an embodiment, the CAPTCHA generator 230 may generate a blinking animation when the arrow object points in the correct direction. In an embodiment, the CAPTCHA generator 230 may generate an animation that temporarily stops when the arrow object points in the correct direction. In an embodiment, the CAPTCHA generator 230 may generate an animation that rotates at a slower speed than when the arrow object points in the correct direction. In an embodiment, the CAPTCHA generator 230 may generate an animation that shakes when the arrow object points in the correct direction.

In an embodiment, the CAPTCHA generating unit 230 includes a first arrow object rotating with a movement distinguished from other directions in relation to the correct direction, and the first arrow object rotating at a speed different from that of the first arrow object. An animation including a second arrow object overlapping with . In an embodiment, the second arrow object may be different from the first arrow object in at least one of hue, saturation, and transparency. In another embodiment, the second arrow object may have the same hue, saturation, and transparency as the first arrow object.

In various embodiments, the CAPTCHA generator 230 may generate a CAPTCHA interface including an arrangement of animations of the generated arrow objects. The CAPTCHA generator 230 may display the CAPTCHA interface through the display 250 . The CAPTCHA generator 230 may request the user to input a correct answer pattern through the display 250 .

The display 250 may display and output information processed by the user terminal 110 . In various embodiments, the display 250 may display the CAPTCHA interface generated by the CAPTCHA generator 230 . In one embodiment, the display 250 may display a direction input interface for inputting the correct answer of the CAPTCHA.

The user input unit 270 means a means for a user to input data for controlling the user terminal 110 . For example, the user input unit 270 may include devices capable of receiving various types of user input, such as a keyboard, a physical button, a mouse, a joystick, a touch screen, a touch pad, a camera, or a microphone. In various embodiments, after the CAPTCHA interface is displayed, the user input unit 270 may receive a direction input for inputting a correct answer of the CAPTCHA from the user.

The user authentication unit 290 of the user terminal 110 compares the direction input received from the user input unit 270 with the correct answer pattern determined by the CAPTCHA generator 230 to determine whether the user has entered the correct answer of the CAPTCHA. can In an embodiment, when the correct answer direction is determined in one of a predetermined number of directions (eg, 4 directions, 8 directions, 16 directions, etc.), the electronic device determines whether the received direction input and the entire correct answer pattern are It can be determined whether they are completely consistent or not. In another embodiment, when the correct answer direction is determined in an arbitrary direction, the electronic device may determine whether the received direction input and the correct answer direction constituting the correct answer pattern match within a predetermined error range. In an embodiment, the user authenticator 290 may transmit the determination result to the server 170 .

The user authentication unit 295 of the server 170 may determine whether to authenticate the user according to the determination result received from the user terminal 110 . When the user inputs the correct answer of the CAPTCHA, the user authentication unit 295 may determine that the user is a human and allow the user to use the service. When the user does not input the correct answer of the CAPTCHA, the user authentication unit 295 may determine the user as a machine and block the user's use of the service. In an embodiment, when the user does not input the correct answer of the CAPTCHA, the user authentication requesting unit 210 may request user authentication again.

In an embodiment, some or all of the functions of the user authentication request unit 210 and the user authentication unit 295 of the server 170 may be performed in the user terminal 110 . For example, the user terminal 110 may determine whether to perform user authentication by itself without a request from the server 170 . For example, the user terminal 110 may provide or block the service of the server 170 to the user according to whether the user inputs the correct answer of the CAPTCHA.

In another embodiment, some or all of the functions of the CAPTCHA generation unit 230 and the user authentication unit 290 of the user terminal 110 may be performed by the server 170 . For example, the server 170 may determine the correct answer pattern of the CAPTCHA and transmit it to the user terminal 110 . In this case, based on the correct answer pattern received from the server 170 , the user terminal 110 may generate an animation of a rotating arrow having a movement distinguished from other directions in relation to the correct answer direction. For example, the user terminal 110 may transmit the user's direction input received from the user input unit 270 to the server 170 . The server 170 may determine whether to authenticate the user by comparing the user's direction input received from the user terminal 110 with the correct answer pattern.

3 is a flowchart of a method of authenticating a user using a CAPTCHA, according to various embodiments of the present disclosure. These operations are performed by the user terminals 110 to 160 and the server 170 shown in FIG. 1 , the user terminals 110 to 160 and the server 170 shown in FIG. 2 , the electronic device 1400 shown in FIG. 14 or This may be performed by the processor 1410 of the electronic device 1400 .

Referring to FIG. 3 , in step S310, the electronic device may determine a correct answer pattern configured in at least one correct answer direction. In an embodiment, the correct answer pattern may be a direction arrangement configured by a combination of a plurality of directions. In an embodiment, the correct answer pattern may consist of a predetermined number of correct answer directions.

In an embodiment, the correct answer direction may be determined as one of up, down, left, and right directions, respectively. In this case, the correct answer pattern may be in the form of an arrangement consisting of a combination of top, bottom, left, and right. For example, the correct answer pattern may be an array in the form of 'top right top left', 'top left bottom bottom left'. In an embodiment, the correct answer direction may be determined as one of a predetermined number of directions. For example, the correct answer pattern may be determined in one of 8 directions or 16 directions.

In another embodiment, the correct answer direction may be determined in an arbitrary direction. In this case, at least one correct answer direction may be represented by an angle measured from a predetermined reference direction. For example, when the upward (↑) direction is used as the reference direction, the correct direction may be indicated by an angle measured in a clockwise direction from the reference direction. In this case, the correct answer pattern may have the form {235, 30, 75, 110}, {142, 313, 90, 228, 57}.

In operation S320 , the electronic device may generate an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction for each of the at least one correct answer direction. In an embodiment, the electronic device may generate animations of a predetermined number of arrow objects, each corresponding to a predetermined number of correct directions. For example, if there are four correct answer directions constituting the correct answer pattern, animation of four rotating arrow objects related to each correct answer direction may be generated.

In various embodiments, the electronic device may generate an animation in which each arrow object rotates at a constant speed and takes a specific movement when pointing in a correct direction. In an embodiment, the electronic device may generate a blinking animation when the arrow object points in the correct direction. In an embodiment, the electronic device may generate an animation that temporarily stops when the arrow object points in the correct direction. In an embodiment, the electronic device may generate an animation in which the arrow object rotates at a slower speed than when the arrow object points in the correct direction. In an embodiment, the electronic device may generate a shaking animation when the arrow object points in the correct direction.

In an embodiment, the electronic device includes a first arrow object rotating with a movement distinguished from another direction with respect to the correct direction, and a second arrow object rotating at a speed different from that of the first arrow object and overlapping the first arrow object. 2 You can create an animation that includes an arrow object. In an embodiment, the second arrow object may be different from the first arrow object in at least one of hue, saturation, and transparency. In another embodiment, the second arrow object may have the same hue, saturation, and transparency as the first arrow object.

In operation S330, the electronic device may display the CAPTCHA interface including the arrangement of the animation of the arrow object corresponding to the correct answer pattern. In an embodiment, the electronic device may request the user to input a correct answer pattern. In an embodiment, the electronic device may display a direction input interface for inputting the correct answer of the CAPTCHA.

In operation S340, the electronic device may receive a direction input from the user. In an embodiment, when the correct answer direction is determined to be one of up, down, left, and right, the electronic device may receive a direction input from the user through a direction key of the keyboard. In another embodiment, the electronic device may receive a user input of clicking or touching a point indicating a direction through the direction input interface.

In step S350, the electronic device may determine whether to authenticate the user according to a result of comparing the received direction input with the correct answer pattern. In an embodiment, when the correct answer direction is determined in one of a predetermined number of directions (eg, 4 directions, 8 directions, 16 directions, etc.), the electronic device determines whether the received direction input and the entire correct answer pattern are It can be determined whether they are completely consistent or not. In another embodiment, when the correct answer direction is determined in an arbitrary direction, the electronic device may determine whether the received direction input and the correct answer direction constituting the correct answer pattern match within a predetermined error range.

When the received direction input and the correct answer pattern match, the electronic device may determine the user as a human and allow the user to use the service. In an embodiment, when the received direction input and the correct answer pattern do not match, the electronic device may determine the user as a machine and block the user from using the service. In one embodiment, when the received direction input and the correct answer pattern do not match, the electronic device returns to step S310 to determine a new correct answer pattern and display a CAPTCHA interface including animation of an arrow object corresponding to the new correct answer pattern. can

According to the above-described embodiments, a CAPTCHA is provided that presents a rotating arrow having a movement differentiated from the correct direction and requests the user to input the correct direction. In such a CAPTCHA, the correct answer cannot be determined with a still screen, and the correct answer can be determined only by recognizing that the movement of the arrow object changes in a specific direction. In the case of a moving image, the difficulty of recognizing the correct answer by analyzing it by a computer is much higher than that of a fixed image. On the other hand, humans can process movements very quickly, accurately, and without difficulty. Therefore, the CAPTCHA according to the embodiments of the present disclosure cannot be easily avoided by the automation program, and the human and the automation program can be more efficiently and accurately determined by using the CAPTCHA according to the embodiments of the present disclosure.

4 is a diagram for describing a CAPTCHA interface according to various embodiments of the present disclosure. The CAPTCHA interface 400 may be an interface that displays an automatically generated question and requests a user's response to the question in order to determine whether the user is a human or a machine.

According to various embodiments of the present disclosure, the CAPTCHA interface 400 may include a question interface 420 including one or more rotating arrow objects 410 , 411 , 412 , and 413 corresponding to a correct answer pattern. Of course, the CAPTCHA interface 400 is not limited to the example of FIG. 4 , and more configurations than those shown in FIG. 4 are included in the CAPTCHA interface 400 or fewer configurations than those shown in FIG. 4 are in the CAPTCHA interface 400 . may be included. For example, only four arrow objects are shown in FIG. 4, but this is limited to the case where the correct answer pattern consists of four correct directions, and the number of arrow objects is smaller according to the number of correct directions constituting the correct answer pattern. or there could be more

According to various embodiments of the present disclosure, the arrow objects 410 , 411 , 412 , and 413 each correspond to one correct answer direction included in the correct answer pattern, and rotate to have movement distinct from other directions in relation to the correct answer direction. can be set to In various embodiments, the arrow objects 410 , 411 , 412 , and 413 may be set to rotate at a constant speed and take a predetermined and distinct movement when pointing in the correct direction. For example, when the correct answer pattern is determined to be 'bottom right (→↓↓←)', the first arrow object 410 takes a predetermined movement when pointing in the right direction, and the second arrow object 411 and the second arrow object 411 The third arrow object 412 may be set to take a predetermined movement when pointing in a downward direction, and the fourth arrow object 413 may be set to take a predetermined movement when pointing in a left direction.

In an embodiment, the basic rotation speed and rotation direction of the arrow objects 410 , 411 , 412 , and 413 may all be constant. That is, when not pointing to the correct direction, the arrow objects 410 , 411 , 412 , and 413 may all be rotating at the same speed and direction. In another embodiment, a basic rotation speed and a rotation direction may be determined for each arrow object 410 , 411 , 412 , and 413 . That is, when not pointing to the correct direction, the arrow objects 410 , 411 , 412 , and 413 may be rotating at respective speeds and directions.

In an embodiment, the direction in which each arrow object 410 , 411 , 412 , 413 initially points may be arbitrarily determined. That is, the arrow objects 410, 411, 412, and 413 are displayed on the screen to point in an arbitrary initial direction, rotate at a constant speed from the initial direction, and can be set to take a distinct movement in relation to the correct direction. there is.

According to various embodiments of the present disclosure, the question interface 420 may be an interface including an arrangement of a series of arrow objects 410 , 411 , 412 , and 413 corresponding to a correct answer pattern. In one embodiment, the question interface 420 may request the user to input the correct answer of the CAPTCHA. In one embodiment, the question interface 420 may be overlaid on the background screen.

5 is a diagram for explaining a method of generating an animation of an arrow object, according to an embodiment of the present disclosure.

Referring to FIG. 5 , for generating an animation of one arrow object, basic frames 500 constituting an animation in which an arrow object rotates once at a constant speed and an animation in which an arrow object takes a movement differentiated in the correct direction are shown. The constituting deformable frames 550 are shown.

In an embodiment, the electronic device may generate basic frames 500 constituting an animation in which the arrow object rotates at a constant speed. For convenience of explanation, an example in which one rotation of the arrow object consists of 12 frames is shown, but it is understood by those skilled in the art that, depending on the number of frames per second (fps) and the rotation speed of the arrow object, the number of frames may be different from that shown. It will be easy to understand. For example, if the number of frames per second is 30 and the arrow object is set to rotate once per second, 30 frames may be generated to compose an animation in which the arrow object rotates once.

In an embodiment, the electronic device may determine a frame at which the arrow object points in the correct direction from among the basic frames 500 . For example, when the correct answer direction is the left direction (←), the electronic device may determine a frame (No. 7 frame) in which the arrow object points to the left as the correct answer direction frame. If there is no frame in which the arrow object accurately points to the correct answer direction, the electronic device may determine a frame in which the arrow object points in a direction closest to the correct answer direction as the correct answer direction frame.

In an embodiment, the electronic device may generate the modified frames 550 by deleting the arrow object from the determined correct answer direction frame. In an embodiment, the electronic device may generate the modified frames 550 by deleting the arrow object from the correct answer direction frame and predetermined frames adjacent to the correct answer direction. By continuously playing the transformed frames 550 generated in this way, the arrow object rotates at a constant speed, but an animation that blinks when pointing in the correct direction may be generated.

6 is a diagram for describing a method of generating an animation of an arrow object according to another embodiment of the present disclosure.

Referring to FIG. 6 , for generating an animation of one arrow object, basic frames 600 constituting an animation in which an arrow object rotates once at a constant speed and an animation in which an arrow object takes a movement differentiated in the correct direction are shown. The constituting deformable frames 650 are shown. In the case of the basic frames 600 , since they correspond to the basic frames 500 of FIG. 5 , a redundant description will be omitted.

In an embodiment, the electronic device may determine a frame at a time point in which the arrow object points in the correct direction from among the basic frames 600 . If there is no frame in which the arrow object accurately points to the correct answer direction, the electronic device may determine a frame in which the arrow object points in a direction closest to the correct answer direction as the correct answer direction frame.

In an embodiment, the electronic device may generate the modified frames 550 by additionally inserting the same frame before or after the determined correct answer direction frame. The number of frames to be additionally inserted may be predetermined. By continuously playing the transformed frames 550 generated in this way, an animation in which the arrow object rotates at a constant speed but temporarily stops when pointing in the correct direction may be generated.

7A to 7D are diagrams for explaining an operation of a CAPTCHA interface according to an embodiment of the present disclosure.

7A to 7D , an example in which the CAPTCHA interface including the arrow objects 410 , 411 , 412 , and 413 rotates with movement distinguished in the correct direction changes in each frame is illustrated. 7A to 7D illustrate an example in which each arrow object rotates at a constant speed, but temporarily stops when pointing in the correct direction according to the embodiment of FIG. 6 . However, of course, it is not limited to what is shown. In addition, although only four arrow objects are shown in FIGS. 7A to 7D, this is limited to the case in which the correct answer pattern consists of four correct directions, and the number of arrow objects is smaller or smaller depending on the number of correct directions constituting the correct answer pattern. There could be more.

In an embodiment, the electronic device determines a correct answer pattern, corresponds to each correct answer direction included in the correct answer pattern, and rotates arrow objects 410, 411, 412 to have movement distinguished from other directions in relation to the correct answer direction. , 413) can be created. The electronic device may display the CAPTCHA interface including the animation arrangement of the generated arrow objects 410 , 411 , 412 , and 413 .

In an embodiment, the direction in which each arrow object 410 , 411 , 412 , 413 initially points may be arbitrarily determined. The electronic device may display each arrow object in the frame 1 to indicate the direction. Afterwards, whenever the frame is switched, each arrow object 410 , 411 , 412 , and 413 may be displayed by being rotated by a predetermined angle according to the number of frames per second and rotation speed. Since the arrow objects 410 , 411 , 412 , and 413 rotate at a constant speed, the angle at which the arrow objects 410 , 411 , 412 , and 413 rotate may be constant for every frame.

However, when the arrow objects 410 , 411 , 412 , and 413 point to the correct answer direction, the corresponding arrow object may move differently according to a preset bar. In one embodiment, the arrow objects 410 , 411 , 412 , and 413 may be deleted from the frame pointing to the correct answer direction or from the frame before or after it. In this case, the arrow object appears to blink in the direction of the correct answer. In another embodiment, the arrow objects 410 , 411 , 412 , and 413 may be fixed without rotating for a predetermined frame after the frame indicating the correct answer direction. In this case, the arrow object seems to temporarily stop in the direction of the correct answer.

For example, FIGS. 7A to 7D illustrate an example in which arrow objects 410 , 411 , 412 , and 413 move when the correct answer pattern is 'right, bottom, left (←↓↓→)'. From frame 1 to frame 16, all arrow objects 410, 411, 412, and 413 rotate at a constant speed every frame when pointing in a direction other than the correct direction, but temporarily stop when pointing to the correct direction. The first arrow object 410 points to the right direction, which is the correct direction, and stops in frames 13 to 15 . The second arrow object 411 stops while pointing in the downward direction, which is the correct direction, in frames 1 to 3 . The third arrow object 412 points downward in frames 8 to 10 and stops. The fourth arrow object 413 points to the left in frames 8 to 10 and stops.

As described above, it is difficult for a computer to recognize a motion from a moving picture. However, the automation program may capture many frames and attempt to probabilistically find the correct direction. For example, according to the method of deleting an arrow object from a frame as in the embodiment shown in FIG. 5 , the automation program may capture frames and estimate the correct direction from the frame without the arrow object among them. For another example, according to the method of inserting the same frame as in the embodiment shown in FIG. 6 , the automation program may capture frames and estimate a direction with a high frequency indicated by an arrow object among them as a correct answer direction.

Accordingly, in order to prevent such an attempt, other embodiments of the present disclosure are proposed with reference to FIGS. 8 to 11 below.

8 is a diagram for explaining a method of generating an animation of an arrow object according to another embodiment of the present disclosure.

Referring to FIG. 8 , for generating an animation of one arrow object, basic frames 800 constituting an animation in which an arrow object rotates once at a constant speed and an animation in which an arrow object takes a movement differentiated in the correct direction are shown. The constituting deformable frames 850 are shown. In the case of the basic frames 800 , since they correspond to the basic frames 500 of FIG. 5 , a redundant description will be omitted.

In an embodiment, the electronic device may determine a frame at a point in time when the arrow object points in the correct direction from among the basic frames 800 . If there is no frame in which the arrow object accurately points to the correct answer direction, the electronic device may determine a frame in which the arrow object points in a direction closest to the correct answer direction as the correct answer direction frame.

In an embodiment, the electronic device may generate the modified frames 850 by additionally inserting a frame before or after the determined correct answer direction frame. The additionally inserted frame may be a frame indicating an intermediate state between the correct answer direction frame and the front and rear frames. By continuously playing the transformed frames 850 generated in this way, an animation in which the arrow object rotates at a constant speed but slows down when pointing in the correct direction may be generated.

In an embodiment, the number of frames to be additionally inserted may be predetermined. Although FIG. 8 shows an example in which one frame is inserted before and after each frame in the correct direction, the present invention is not limited thereto, and two or more frames may be inserted respectively.

9 is a diagram for describing a method of generating an animation of an arrow object according to another embodiment of the present disclosure.

Referring to FIG. 9 , for generating an animation of one arrow object, basic frames 900 constituting an animation in which an arrow object rotates once at a constant speed and an animation in which an arrow object takes a movement differentiated in the correct direction are shown. The constituting deformable frames 950 are shown. In the case of the basic frames 900 , since they correspond to the basic frames 500 of FIG. 5 , a redundant description will be omitted.

In an embodiment, the electronic device may determine a frame at a point in time when the arrow object points in the correct direction from among the basic frames 900 . If there is no frame in which the arrow object accurately points to the correct answer direction, the electronic device may determine a frame in which the arrow object points in a direction closest to the correct answer direction as the correct answer direction frame.

In an embodiment, the electronic device may generate the modified frames 950 by reversing the order of the determined correct answer direction frame and a frame before or after the correct answer direction frame. By continuously replaying the transformed frames 950 generated in this way, the arrow object rotates at a constant speed, but an animation that shakes when pointing in the correct direction may be generated.

According to the above-described embodiments, the directions pointed by the arrow object are all different for each frame, and there is no difference in the frequency of the directions pointed by the arrow object. Therefore, it is possible to prevent the automated program from attempting to find the correct direction probabilistically by capturing many frames.

10 is a diagram for describing a CAPTCHA interface according to various embodiments of the present disclosure.

According to various embodiments of the present disclosure, the CAPTCHA interface 1000 is a query interface 1020 including first arrow objects 1010 , 1011 , 1012 , 1013 and second arrow objects 1030 , 1031 , 1032 , 1033 . ) may be included. Of course, the CAPTCHA interface 1000 is not limited to the example of FIG. 10 , and more configurations than those shown in FIG. 10 are included in the CAPTCHA interface 1000 or fewer configurations than those shown in FIG. 10 are in the CAPTCHA interface 1000 . may be included. For example, only four arrow objects are shown in FIG. 10, but this is limited to the case where the correct answer pattern consists of four correct directions, and the number of arrow objects is smaller according to the number of correct directions constituting the correct answer pattern. or there could be more

According to various embodiments of the present disclosure, the first arrow objects 1010 , 1011 , 1012 , and 1013 each correspond to one correct answer direction included in the correct answer pattern, and perform movement that is distinguished from other directions in relation to the correct answer direction. It can be set to rotate to have it. In various embodiments, the first arrow objects 1010 , 1011 , 1012 , and 1013 may be set to rotate at a constant speed and take a predetermined and distinct movement when pointing in the correct direction. Since the first arrow objects 1010 , 1011 , 1012 , and 1013 may correspond to the arrow objects 410 , 411 , 412 , and 413 of FIG. 4 , a redundant description will be omitted. A method of generating the animation of the first arrow objects 1010 , 1011 , 1012 , and 1013 may follow various embodiments described above with reference to FIGS. 5 to 9 .

According to various embodiments of the present disclosure, the second arrow objects 1030 , 1031 , 1032 , and 1033 overlap the first arrow objects 1010 , 1011 , 1012 , 1013 , respectively, and the first arrow objects 1010 and 1011 , respectively. , 1012, 1013) and may be set to rotate at a different speed. The second arrow objects 1030 , 1031 , 1032 , and 1033 may rotate at a constant speed in all directions. That is, the electronic device generating the CAPTCHA interface 1000 , for each position of the first arrow object 1010 , 1011 , 1012 , and 1013 , is a dummy arrow object 1030 that is a dummy arrow object rotating at the same position at a different speed. , 1031, 1032, 1033) can be created.

In an embodiment, the second arrow objects 1030 , 1031 , 1032 , and 1033 may rotate at a faster speed than the first arrow objects 1010 , 1011 , 1012 , and 1013 . When the second arrow objects 1030 , 1031 , 1032 , and 1033 rotate very quickly, humans rather ignore the movement of the second arrow objects 1030 , 1031 , 1032 , and 1033 . However, since the machine analyzes the first arrow object (1010, 1011, 1012, 1013) and the second arrow object (1030, 1031, 1032, 1033) equally in all frames, the second arrow object (1030, 1031, 1032, 1033) can be a hindrance to the machine estimating the correct answer of CAPTCHA. Therefore, the CAPTCHA according to the above-described embodiment cannot be easily avoided by the automation program, and by using the CAPTCHA according to the above-described embodiment, the automation program can be more efficiently and accurately determined by distinguishing it from a human.

In one embodiment, in order for the user to easily distinguish the first arrow objects 1010, 1011, 1012, 1013 and the second arrow objects 1030, 1031, 1032, 1033, the second arrow objects 1030, 1031, At least one of hue, saturation, and transparency may be set differently for 1032 and 1033 from the first arrow objects 1010 , 1011 , 1012 , and 1013 .

According to various embodiments of the present disclosure, the question interface 1020 includes a series of first arrow objects 1010, 1011, 1012, and 1013 and second arrow objects 1030, 1031, 1032, and 1033 corresponding to the correct answer pattern. It may be an interface containing an array of In one embodiment, the question interface 1020 may request the user to input the correct answer of the CAPTCHA. In one embodiment, the question interface 1020 may be overlaid on the background screen.

In an embodiment, the configuration and shape of the CAPTCHA interface 1000 may be set differently according to a difficulty level. The configuration and shape of the CAPTCHA interface 1000 may be set to make it more difficult to recognize the correct answer of the CAPTCHA as the difficulty level increases. That is, as the difficulty level is higher, it may be set to be difficult to recognize the arrow object itself or to make it difficult to recognize that the arrow object takes a movement differentiated in the correct direction.

For example, the CAPTCHA interface 1000 of the low difficulty level includes only the first arrow objects 1010, 1011, 1012, and 1013, and the CAPTCHA interface 1000 of the high difficulty level includes the first arrow objects 1010, 1011, 1012 , 1013 ) and the second arrow objects 1030 , 1031 , 1032 , and 1033 may all be included. For example, in the CAPTCHA interface 1000 of the low difficulty level, the saturation of the first arrow object 1010, 1011, 1012, 1013 or the second arrow object 1030, 1031, 1032, 1033 is set to be high, and the high difficulty level is set. In the CAPTCHA interface 1000 of the level, the saturation of the first arrow objects 1010 , 1011 , 1012 , and 1013 or the second arrow objects 1030 , 1031 , 1032 , and 1033 may be set to be low. For example, in the CAPTCHA interface 1000 of a low difficulty level, the transparency of the first arrow object 1010, 1011, 1012, 1013 or the second arrow object 1030, 1031, 1032, 1033 is set to be low, and the difficulty level is high. In the level CAPTCHA interface 1000 , the transparency of the first arrow objects 1010 , 1011 , 1012 , and 1013 or the second arrow objects 1030 , 1031 , 1032 , and 1033 may be set to be high. For example, the transparency of the question interface 1020 may be set low in the CAPTCHA interface 1000 of a low difficulty level, and the transparency of the question interface 1020 may be set high in the CAPTCHA interface 1000 of a high difficulty level.

For example, the configuration and shape of the CAPTCHA interface 1000 for each difficulty level may be set by combining one or more of the above examples. Table 1 below shows an example of setting the configuration and shape of the CAPTCHA interface 1000 for each difficulty level. Of course, it is not limited to the following examples.

difficulty level Add a second arrow object Saturation of arrow object Transparency of arrow objects Question Interface Transparency Stage 1 no no no no Step 2 no no Yes Yes Step 3 Yes no no no Step 4 Yes Yes no no Step 5 Yes Yes Yes Yes

In one embodiment, the difficulty level may be adjusted according to the user's skill level. For example, when a user inputs a correct answer for the CAPTCHA interface 1000 of a specific difficulty level, the CAPTCHA interface 1000 of a higher difficulty level may be used when requesting user authentication from the same user later. As another example, when the user does not input a correct answer for the CAPTCHA interface 1000 of a specific difficulty level, the CAPTCHA interface 1000 of a lower difficulty level may be used when requesting user authentication from the same user later.

In one embodiment, the difficulty level may be adjusted according to the user's confidence or the degree to which the user suspects the machine. For example, in the case of regular user authentication, the CAPTCHA interface 1000 of a lower difficulty level may be used, and when an abnormal behavior of the user is detected and user authentication is requested, the CAPTCHA interface 1000 of a higher difficulty level may be used. For example, when an abnormal behavior of a user is detected multiple times for the same user, the CAPTCHA interface 1000 having a higher difficulty level may be used as the number of times requesting user authentication increases. For example, when the detection process for detecting an abnormal behavior of the user evaluates the user's reliability or the probability that the user is a machine, the difficulty level of the CAPTCHA interface 1000 may be determined according to the evaluated value.

11 is a diagram for describing a CAPTCHA interface according to various embodiments of the present disclosure.

According to various embodiments of the present disclosure, the CAPTCHA interface 1100 is a query interface 1120 including first arrow objects 1110 , 1111 , 1112 , 1113 and second arrow objects 1130 , 1131 , 1132 , 1133 . ) may be included. The first arrow objects 1110 , 1111 , 1112 , 1113 , the second arrow objects 1130 , 1131 , 1132 , 1133 , and the question interface 1120 are the first arrow objects 1010 , 1011 , 1012 , 1013 of FIG. 10 . ), the second arrow objects 1030 , 1031 , 1032 , and 1033 , and may correspond to the question interface 1020 , so a redundant description will be omitted.

In an embodiment, the second arrow objects 1130 , 1131 , 1132 , and 1133 may be set to have the same hue, saturation, or transparency as the first arrow objects 1110 , 1111 , 1112 , and 1113 . In this case, unlike the embodiment shown in FIG. 10 , the computer cannot distinguish the first arrow objects 1110 , 1111 , 1112 , 1113 and the second arrow objects 1130 , 1131 , 1132 , 1133 from the captured frame. . Therefore, even if the automated process captures and compares the frame in the direction of the correct answer and the frame immediately before or after it in order to estimate the correct answer of CAPTCHA, it is difficult to determine that the arrow object is taking a different movement in the correct direction. Therefore, it is possible to prevent the automated program from trying to find the correct direction by capturing successive frames.

12 is a diagram illustrating an embodiment using a CAPTCHA interface of the present disclosure.

12 illustrates an example of an application screen on which the CAPTCHA interface 1220 is displayed in the user terminal. As shown in FIG. 12 , the CAPTCHA interface 1220 may be displayed overlaid on the application screen. In an embodiment, the CAPTCHA interface 1220 may be displayed when user authentication is requested while a user is using a service. 12 shows an example in which the CAPTCHA interface 1220 is used in a game application, it should be understood that the CAPTCHA interface 1220 may be displayed for user authentication in an application for any online activity other than the game application. do.

In an embodiment, the CAPTCHA interface 1220 may display an animation of a rotating arrow object corresponding to the correct answer pattern and request the user to input the correct answer pattern. In an embodiment, when the correct answer direction is determined to be one of up, down, left, and right, the electronic device may receive a direction input from the user through a direction key of the keyboard.

In an embodiment, when the CAPTCHA interface 1220 is displayed, the electronic device may set the application not to respond to the user's direction input. For example, if the user's direction input is an operation for moving the game character in the application, the game character may not move even if the user inputs the direction while the CAPTCHA interface 1220 is being displayed. In one embodiment, when the CAPTCHA interface 1220 is displayed, the operation of the application may be paused in the meantime.

In an embodiment, when the user's direction input matches the correct answer pattern, the CAPTCHA interface 1220 may disappear from the screen, and use of the service by the user may be resumed. In an embodiment, when the user's direction input does not match the correct answer pattern, the user's use of the service may be stopped, or the user may be given a predetermined penalty for using the service. In an embodiment, when the user's direction input does not match the correct answer pattern, the CAPTCHA interface 1220 corresponding to the new correct answer pattern is displayed to request the user to input the correct answer pattern again.

13 is a diagram illustrating another embodiment using a CAPTCHA interface of the present disclosure.

13 illustrates an example of an application screen on which the CAPTCHA interface 1320 and the direction input interface 1340 are displayed in the user terminal. In an embodiment, the CAPTCHA interface 1320 may display an animation of a rotating arrow object corresponding to the correct answer pattern and request the user to input the correct answer pattern. Since the CAPTCHA interface 1320 may correspond to the CAPTCHA interface 1220 of FIG. 12 , a redundant description will be omitted.

In an embodiment, when the CAPTCHA interface 1320 is displayed, a direction input interface 1340 for the user to input the correct answer of the CAPTCHA may be displayed together. As shown in FIG. 13 , the direction input interface 1340 may be displayed overlaid on the application screen. In another embodiment, the direction input interface 1340 may be an interface used for direction input in an application regardless of the CAPTCHA interface 1320 . In this case, when the CAPTCHA interface 1320 is displayed, the input of the direction input interface 1340 may not be used for manipulation of an existing application, but may be set to be used only for inputting the correct answer of the CAPTCHA.

In various embodiments, the direction input interface 1340 may be an interface for receiving a user's click or touch input to input a direction. In an embodiment, the direction input interface 1340 may include direction buttons corresponding to predetermined correct directions. Although 8 direction buttons corresponding to 8 correct directions are illustrated in FIG. 13 , of course, the present invention is not limited thereto. In another embodiment, the direction input interface 1340 may include a direction pad for inputting an arbitrary direction. When a user's click or touch input through the direction pad is obtained, the electronic device may determine a direction from the reference point to the click or touch point as the user input direction.

In an embodiment, when the user's direction input matches the correct answer pattern, the CAPTCHA interface 1320 and the direction input interface 1340 disappear from the screen, and use of the service by the user may be resumed.

14 is a diagram for describing a detailed configuration of an electronic device according to various embodiments of the present disclosure;

14 , the electronic device 1400 according to some embodiments may include at least one processor 1410 , an output unit 1430 , a memory 1450 , a user input unit 1470 , and a communication unit 1490 . can However, not all components shown in FIG. 14 are essential components of the electronic device 1400 . The electronic device 1400 may be implemented by more components than the components shown in FIG. 14 , or the electronic device 1400 may be implemented by fewer components than the components shown in FIG. 14 . The electronic device 1400 may be a user terminal, a server, a network system, or a separate device.

According to an embodiment of the present disclosure, the processor 1410 generally controls the overall operation of the electronic device 1400 . For example, the processor 1410 may generally control the output unit 1430 , the memory 1450 , the user input unit 1470 , the communication unit 1490 , and the like by executing a program stored in the memory 1450 . The processor 1410 may control the operation of the electronic device 1400 in the present specification by controlling the output unit 1430 , the memory 1450 , the user input unit 1470 , the communication unit 1490 , and the like.

According to an embodiment of the present disclosure, the processor 1410 determines a correct answer pattern configured in at least one correct answer direction, and, for each of the at least one correct answer direction, moves that is distinguished from other directions in relation to the correct answer direction Creates an animation of an arrow object rotating with It may be configured to receive an input and determine whether to authenticate the user according to a result of comparing the received direction input with the correct answer pattern.

According to an embodiment of the present disclosure, the processor 1410 generates frames constituting an animation in which the arrow object rotates at a constant speed, and deletes the arrow object from a frame at a point in time when the arrow object points to the correct answer direction. Thus, it may be set to generate a blinking animation when the arrow object points in the direction of the correct answer.

According to an embodiment of the present disclosure, the processor 1410 generates frames constituting an animation in which the arrow object rotates at a constant speed, and additionally inserts a frame at a time point when the arrow object points in the correct direction, It may be set to generate an animation that temporarily stops when the arrow object points to the correct answer direction.

According to an embodiment of the present disclosure, the processor 1410 generates frames constituting an animation in which the arrow object rotates at a constant speed, and additionally inserts frames before or after a point in time when the arrow object points in the correct direction. Thus, when the arrow object points in the correct direction, it may be set to generate an animation that rotates at a speed slower than the constant speed.

According to an embodiment of the present disclosure, the processor 1410 generates frames constituting an animation in which the arrow object rotates at a constant speed, and in the animation, the order of the front and rear frames at a time point when the arrow object points to the correct answer direction can be set to generate a shaking animation when the arrow object points in the correct direction by inverting .

According to an embodiment of the present disclosure, the processor 1410 includes a first arrow object rotating with a movement distinguished from other directions in the correct answer direction, and rotating at a speed different from that of the first arrow object and the first arrow object It may be set to generate an animation including a second arrow object overlapping with .

The output unit 1430 may display and output information processed by the electronic device 1400 . The output unit 1430 may output an application screen including graphic interfaces according to various embodiments of the present disclosure under the control of the processor 1410 . According to an embodiment of the present disclosure, the output unit 1430 may display a CAPTCHA interface including an animation arrangement of an arrow object corresponding to a correct answer pattern. According to an embodiment of the present disclosure, the output unit 1430 may display a direction input interface for receiving a user's direction input.

The memory 1450 may store a program for processing and controlling the processor 1410 , and may also store data input to or output from the electronic device 1400 .

According to an embodiment of the present disclosure, using a program stored in the memory 1450 , the processor 1410 may execute a method of authenticating a user using a CAPTCHA.

According to an embodiment of the present disclosure, the memory 1450 is a flash memory type, a hard disk type, a multimedia card micro type, or a card type memory (eg, SD or XD memory, etc.), RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read- Only memory), a magnetic memory, a magnetic disk, and an optical disk may include at least one type of storage medium. Also, according to an embodiment of the present disclosure, programs stored in the memory 1450 may be classified into a plurality of modules according to their functions.

The user input unit 1470 means a means for a user to input data for controlling the electronic device 1400 . For example, the user input unit 1470 may include devices capable of receiving various types of user input, such as a keyboard, a physical button, a mouse, a joystick, a touch screen, a touch pad, a camera, or a microphone. According to an embodiment of the present disclosure, the user input unit 1470 may obtain a direction input of the user for inputting the correct answer of the CAPTCHA. According to an embodiment of the present disclosure, the user input unit 1470 may receive a direction input from the user through a direction key of the keyboard. According to an embodiment of the present disclosure, a user input of clicking or touching a point indicating a direction may be received through the direction input interface.

The communication unit 1490 may communicate with an external device under the control of the processor 1410 . For example, the communication unit 1490 may communicate with an external device such as a payment server or an authentication server under the control of the processor 1410 . Also, the communication unit 1490 may acquire user information or a user input through communication with an external interface.

According to an embodiment of the present disclosure, the method of authenticating a user using the CAPTCHA may be performed by the electronic device 1400 , or may be performed by a server or a user terminal, and also includes at least one method included in the electronic device 1400 . The configuration may perform the embodiments described above with reference to FIGS. 1 to 13 .

In addition, the method of authenticating a user using CAPTCHA may be performed individually or together by the server and the user terminal. The configuration of the server and the user terminal will be described in more detail below with reference to FIGS. 15 and 16 .

15 is a diagram for describing a detailed configuration of a server according to various embodiments of the present disclosure.

15 , the server 1500 according to some embodiments may include at least one processor 1510 , a communication unit 1530 , and a memory 1550 . However, not all of the components shown in FIG. 15 are essential components of the server 1500 . The server 1500 may be implemented by more components than the components shown in FIG. 15 , and the server 1500 may be implemented by fewer components than the components shown in FIG. 15 .

According to an embodiment of the present disclosure, the processor 1510 typically controls the overall operation of the server 1500 . For example, the processor 1510 may control the communication unit 1530 and the memory 1550 in general by executing a program stored in the memory 1550 . The processor 1510 may control the operation of the server 1500 in the present specification by controlling the communication unit 1530 and the memory 1550 .

According to an embodiment of the present disclosure, the processor 1510 determines whether user authentication is required for the user terminal 1600 attempting to use the service or using the service, and when it is determined that user authentication is required, the communication unit ( 1530 , a user authentication request may be transmitted to the user terminal 1600 . According to an embodiment of the present disclosure, the processor 1510 may receive the user authentication result of the user terminal 1600 through the communication unit 1530 . According to an embodiment of the present disclosure, the processor 1510 may allow the user to use the service, block the user's access to the service, or request the user to re-authenticate according to the received user authentication result.

According to an embodiment of the present disclosure, the processor 1510 determines whether user authentication is required for the user terminal 1600 that attempts to use a service or is using the service, and when it is determined that user authentication is required, at least one It is possible to determine the correct answer pattern consisting of the correct answer direction of The processor 1510 may transmit the determined correct answer pattern to the user terminal 1600 through the communication unit 1530 . According to another embodiment of the present disclosure, the processor 1510 receives the user's direction input from the user terminal 1600 through the communication unit 1530 and compares the received user's direction input with the correct answer pattern to determine whether the user is authenticated. can be decided The processor 1510 may allow the user to use the service, block the user's access to the service, or request re-authentication from the user according to the user authentication result.

According to an embodiment of the present disclosure, since the operation of the processor 1510 may correspond to the operation of the processor 1410 of the electronic device 1400 described with reference to FIG. 14 , a detailed description thereof will be omitted.

The communication unit 1530 may provide a query to the user terminal 1600 under the control of the processor 1510 and receive response information to the query. Also, according to an embodiment of the present disclosure, the communication unit 1530 may transmit/receive data to and from the user terminal 1600 , and the data transmitted/received to/from the user terminal 1600 includes the user terminal 1600 or the user terminal 1600 . Control data for controlling the included program may be included.

According to an embodiment of the present disclosure, the communication unit 1530 may transmit a user authentication request to the user terminal 1600 under the control of the processor 1510 . According to an embodiment of the present disclosure, the communication unit 1530 may receive the user authentication result of the user terminal 1600 under the control of the processor 1510 .

According to an embodiment of the present disclosure, the communication unit 1530 may transmit the correct answer pattern of the CAPTCHA to the user terminal 1600 under the control of the processor 1510 . According to an embodiment of the present disclosure, the communication unit 1530 may receive a user's direction input from the user terminal 1600 under the control of the processor 1510 .

The memory 1550 may store a program for processing and controlling the processor 1510 , and may store data input to or output from the server 1500 .

According to an embodiment of the present disclosure, using a program stored in the memory 1550 , the processor 1510 may execute a method of authenticating a user using a CAPTCHA.

According to an embodiment of the present disclosure, the memory 1550 is a flash memory type, a hard disk type, a multimedia card micro type, and a card type memory (eg, SD or XD memory, etc.), RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read- Only memory), a magnetic memory, a magnetic disk, and an optical disk may include at least one type of storage medium. Also, according to an embodiment of the present disclosure, programs stored in the memory 1550 may be classified into a plurality of modules according to their functions.

In addition, according to an embodiment of the present disclosure, the method of authenticating a user using CAPTCHA may be performed separately by the server 1500 and the user terminal 1600, and the server 1500 and the user terminal 1600 are separately performed. may be performed or may be performed in the electronic device 1400 .

16 is a diagram for describing a detailed configuration of a user terminal according to various embodiments of the present disclosure.

As shown in FIG. 16 , the user terminal 1600 according to some embodiments may include at least one processor 1610 , an output unit 1630 , a memory 1650 , a user input unit 1670 , and a communication unit 1690 . can However, not all components shown in FIG. 16 are essential components of the user terminal 1600 . The user terminal 1600 may be implemented by more components than the components shown in FIG. 16 , and the user terminal 1600 may be implemented by fewer components than the components shown in FIG. 16 .

According to an embodiment of the present disclosure, the processor 1610 generally controls the overall operation of the user terminal 1600 . For example, the processor 1610 may generally control the output unit 1630 , the memory 1650 , the user input unit 1670 , the communication unit 1690 , and the like by executing a program stored in the memory 1650 . The processor 1610 may control the operation of the user terminal 1600 in the present specification by controlling the output unit 1630 , the memory 1650 , the user input unit 1670 , the communication unit 1690 , and the like.

According to an embodiment of the present disclosure, the processor 1610 may receive a user authentication request from the server 1500 through the communication unit 1690 . According to an embodiment of the present disclosure, the processor 1610 determines a correct answer pattern configured in at least one correct answer direction based on receiving the user authentication request, and for each of the at least one correct correct answer direction, the correct answer Generates an animation of an arrow object rotating with movement distinguished from other directions in relation to the direction, displays a CAPTCHA interface including an arrangement of the generated animation corresponding to the correct answer pattern, and receives a direction input from the user and, according to a result of comparing the received direction input with the correct answer pattern, it is possible to determine whether to authenticate the user. According to an embodiment of the present disclosure, the processor 1610 may transmit the user authentication result to the server 1500 through the communication unit 1690 .

According to an embodiment of the present disclosure, the processor 1610 may receive a correct answer pattern from the server 1500 through the communication unit 1690 . According to an embodiment of the present disclosure, the processor 1610 generates an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction for each of at least one correct answer direction constituting the correct answer pattern. and a CAPTCHA interface including an arrangement of the generated animation corresponding to the correct answer pattern may be displayed, and a direction input may be received from the user. According to an embodiment of the present disclosure, the processor 1610 may transmit the user's direction input to the server 1500 through the communication unit 1690 .

According to an embodiment of the present disclosure, since the operation of the processor 1610 may correspond to the operation of the processor 1410 of the electronic device 1400 described with reference to FIG. 14 , a detailed description thereof will be omitted.

The output unit 1630 may display and output information processed by the user terminal 1600 . The output unit 1630 is a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, a three-dimensional display ( 3D display) and electrophoretic display (electrophoretic display) may include at least one. When the output unit 1630 and the touchpad form a layer structure to form a touch screen, the output unit 1630 may be used as an input device in addition to the output device. In addition, the output unit 1630 may include an LED lamp, a vibration motor, a speaker, a flash, and the like, but is not limited to the above example.

The output unit 1630 may output an application screen including graphic interfaces according to various embodiments of the present disclosure under the control of the processor 1610 . According to an embodiment of the present disclosure, the output unit 1630 may display a CAPTCHA interface including an animation arrangement of an arrow object corresponding to a correct answer pattern. According to an embodiment of the present disclosure, the output unit 1630 may display a direction input interface for receiving a user's direction input.

The memory 1650 may store a program for processing and control of the processor 1610 , and may store data input to or output from the user terminal 1600 .

According to an embodiment of the present disclosure, the processor 1610 may execute a method of authenticating a user using a CAPTCHA using a program stored in the memory 1650 .

According to an embodiment of the present disclosure, the memory 1650 is a flash memory type, a hard disk type, a multimedia card micro type, or a card type memory (eg, SD or XD memory, etc.), RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read- Only memory), a magnetic memory, a magnetic disk, and an optical disk may include at least one type of storage medium. Also, according to an embodiment of the present disclosure, programs stored in the memory 1650 may be classified into a plurality of modules according to their functions.

According to an embodiment of the present disclosure, the user input unit 1670 may include various interfaces. For example, the user input unit 1670 may include a keypad, a dome switch, a voice input interface, a fingerprint input interface, and a touch input interface (contact capacitive method, pressure resistance film method, infrared sensing). method, surface ultrasonic conduction method, integral tension measurement method, piezo effect method, etc.), camera, jog wheel, jog switch, etc. can include various interfaces, and various sensors such as acceleration sensor, position sensor, temperature sensor, and light sensor can be included. It can also be linked with the user interface. However, the present invention is not limited thereto, and the user input unit 1670 may include a device supporting various inputs.

According to an embodiment of the present disclosure, the user input unit 1470 may obtain a direction input of the user for inputting the correct answer of the CAPTCHA. According to an embodiment of the present disclosure, the user input unit 1470 may receive a direction input from the user through a direction key of the keyboard. According to an embodiment of the present disclosure, a user input of clicking or touching a point indicating a direction may be received through the direction input interface.

The communication unit 1690 may provide a query to the server 1500 under the control of the processor 1610 and receive response information to the query. Also, according to an embodiment of the present disclosure, the communication unit 1690 may transmit/receive data to and from the server 1500 , and the data transmitted/received to/from the server 1500 includes the user terminal 1600 or the user terminal 1600 . It may contain control data for controlling the program.

According to an embodiment of the present disclosure, the communication unit 1690 may receive a user authentication request from the server 1500 under the control of the processor 1610 . According to an embodiment of the present disclosure, the communication unit 1690 may transmit the user authentication result to the server 1500 under the control of the processor 1610 .

According to an embodiment of the present disclosure, the communication unit 1690 may receive the correct answer pattern of the CAPTCHA from the server 1500 under the control of the processor 1610 . According to an embodiment of the present disclosure, the communication unit 1690 may transmit a user's direction input to the server 1500 under the control of the processor 1610 .

According to an embodiment of the present disclosure, the communication unit 1690 is a Bluetooth communication unit, a BLE (Bluetooth Low Energy) communication unit, a near field communication unit (Near Field Communication), a WLAN (Wi-Fi) communication unit, a Zigbee communication unit, an infrared (IrDA), It may include an infrared Data Association) communication unit, a Wi-Fi Direct (WFD) communication unit, an ultra wideband (UWB) communication unit, an Ant+ communication unit, and the like, but is not limited thereto.

Also, according to an embodiment of the present disclosure, the communication unit 1690 transmits and receives a wireless signal to and from at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call signal, or a text/multimedia message.

The device described above may be implemented as a hardware component, a software component, and/or a combination of the hardware component and the software component. For example, devices and components described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA). , a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions, may be implemented using one or more general purpose or special purpose computers. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. A processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For convenience of understanding, although one processing device is sometimes described as being used, one of ordinary skill in the art will recognize that the processing device includes a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that can include For example, the processing device may include a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as parallel processors.

Software may comprise a computer program, code, instructions, or a combination of one or more thereof, which configures a processing device to operate as desired or is independently or collectively processed You can command the device. The software and/or data may be any kind of machine, component, physical device, virtual equipment, computer storage medium or apparatus, to be interpreted by or to provide instructions or data to the processing device. , or may be permanently or temporarily embody in a transmitted signal wave. The software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored in one or more computer-readable recording media.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the embodiment, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

As described above, although the embodiments have been described with reference to the limited embodiments and drawings, various modifications and variations are possible from the above description by those skilled in the art. For example, the described techniques are performed in an order different from the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (29)

In the user authentication method using CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart),
determining a correct answer pattern configured in at least one correct answer direction;
generating, for each of the at least one correct answer direction, an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction;
displaying a CAPTCHA interface including an arrangement of the generated animation corresponding to the correct answer pattern;
receiving a direction input from a user; and
According to a result of comparing the received direction input and the correct answer pattern, the user authentication method using a CAPTCHA, comprising the step of determining whether to authenticate the user. The method of claim 1 , wherein the at least one correct answer direction is determined as one of up, down, left, and right, respectively. The method of claim 1, wherein the at least one correct answer direction is determined in an arbitrary direction, respectively. According to claim 1,
The correct answer pattern consists of a predetermined number of correct answer directions,
The CAPTCHA interface includes animations of the predetermined number of arrow objects, a user authentication method using CAPTCHA. The method of claim 1, wherein the generating of the animation comprises:
generating frames constituting an animation in which the arrow object rotates at a constant speed; and
generating an animation that blinks when the arrow object points to the correct answer direction by deleting the arrow object from a frame when the arrow object points to the correct answer direction;
Including, user authentication method using CAPTCHA. The method of claim 1, wherein the generating of the animation comprises:
generating frames constituting an animation in which the arrow object rotates at a constant speed; and
generating an animation that temporarily stops when the arrow object points to the correct answer direction by inserting additional frames when the arrow object points to the correct answer direction;
Including, user authentication method using CAPTCHA. The method of claim 1, wherein the generating of the animation comprises:
generating frames constituting an animation in which the arrow object rotates at a constant speed; and
generating an animation in which the arrow object rotates at a speed slower than the constant speed when the arrow object points in the correct direction by additionally inserting a frame before or after the time point in which the arrow object points to the correct answer direction;
Including, user authentication method using CAPTCHA. The method of claim 1, wherein the generating of the animation comprises:
generating frames constituting an animation in which the arrow object rotates at a constant speed; and
generating an animation that vibrates when the arrow object points to the correct answer direction by reversing the order of the front and rear frames when the arrow object points in the correct answer direction in the animation;
Including, user authentication method using CAPTCHA. The method of claim 1, wherein the generating of the animation comprises:
Creating an animation including a first arrow object rotating with a movement distinguished from other directions in the correct direction, and a second arrow object rotating at a speed different from that of the first arrow object and overlapping the first arrow object step;
Including, user authentication method using CAPTCHA. The method of claim 9 , wherein the second arrow object is different from the first arrow object in at least one of hue, saturation, and transparency. The method of claim 9 , wherein the second arrow object has the same hue, saturation, and transparency as the first arrow object. The method of claim 1 , wherein the receiving of the direction input comprises receiving a user's direction input through a direction key of a keyboard. According to claim 1,
the CAPTCHA interface includes a direction input interface for receiving a direction input;
The receiving of the direction input includes receiving an input of a user clicking or touching a point indicating a direction through the direction input interface. An electronic device for authenticating a user using a CAPTCHA, the electronic device comprising:
display;
user input unit;
a memory for storing instructions; and
at least one processor operatively coupled to the display, the user input unit, and the memory and configured to execute the instructions;
The at least one processor executes the instructions,
determine a correct answer pattern consisting of at least one correct answer direction,
For each of the at least one correct answer direction, generating an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction,
Displaying a CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) interface corresponding to the correct answer pattern, including an arrangement of the generated animation, through the display,
receiving a direction input from the user input unit;
and to determine whether to authenticate the user according to a result of comparing the received direction input with the correct answer pattern. The electronic device of claim 14 , wherein the at least one correct answer direction is determined as one of up, down, left, and right, respectively. The electronic device of claim 14 , wherein the at least one correct answer direction is determined as an arbitrary direction, respectively. 15. The method of claim 14,
The correct answer pattern consists of a predetermined number of correct answer directions,
The CAPTCHA interface includes animations of the predetermined number of arrow objects. 15. The method of claim 14, wherein the at least one processor,
generating frames constituting an animation in which the arrow object rotates at a constant speed;
The electronic device is configured to delete the arrow object from a frame when the arrow object points to the correct answer direction to generate a blinking animation when the arrow object points to the correct answer direction. 15. The method of claim 14, wherein the at least one processor,
generating frames constituting an animation in which the arrow object rotates at a constant speed;
The electronic device is set to generate an animation that temporarily stops when the arrow object points to the correct answer direction by additionally inserting a frame when the arrow object points to the correct answer direction. 15. The method of claim 14, wherein the at least one processor,
generating frames constituting an animation in which the arrow object rotates at a constant speed;
The electronic device is set to generate an animation that rotates at a speed slower than the constant speed when the arrow object points to the correct answer direction by additionally inserting a frame before or after the time point when the arrow object points to the correct answer direction. 15. The method of claim 14, wherein the at least one processor,
generating frames constituting an animation in which the arrow object rotates at a constant speed;
The electronic device is configured to reverse the order of the front and back frames when the arrow object points to the correct answer direction in the animation to generate an animation that shakes when the arrow object points to the correct answer direction. 15. The method of claim 14, wherein the at least one processor,
To create an animation including a first arrow object rotating in the correct direction with a movement distinguished from other directions, and a second arrow object rotating at a speed different from that of the first arrow object and overlapping the first arrow object to be established, the electronic device. The electronic device of claim 22 , wherein the second arrow object is different from the first arrow object in at least one of hue, saturation, and transparency. The electronic device of claim 22 , wherein the second arrow object has the same hue, saturation, and transparency as the first arrow object. 15. The method of claim 14,
The user input unit includes a keyboard,
The at least one processor is configured to receive a direction input of a user through a direction key of the keyboard. 15. The method of claim 14,
the CAPTCHA interface includes a directional pad interface for receiving directional input;
The at least one processor is configured to receive a user input of clicking or touching a point indicating a direction through the direction pad interface. In the user terminal for authenticating a user using CAPTCHA, the user terminal,
a communication unit for receiving a user authentication request from a server;
display;
user input unit;
a memory for storing instructions; and
at least one processor operatively connected to the communication unit, the display, the user input unit, and the memory, and configured to execute the instructions;
The at least one processor executes the instructions,
Based on the user authentication request, determining a correct answer pattern consisting of at least one correct answer direction,
For each of the at least one correct answer direction, generate an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction,
Displaying a CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) interface corresponding to the correct answer pattern, including an arrangement of the generated animation, through the display,
receiving a direction input from the user input unit;
According to a result of comparing the received direction input with the correct answer pattern, it is determined whether or not to authenticate the user,
A user terminal configured to control the communication unit to transmit whether the user is authenticated or not to the server. determining a correct answer pattern configured in at least one correct answer direction;
generating, for each of the at least one correct answer direction, an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction;
displaying a CAPTCHA interface including an arrangement of the generated animation corresponding to the correct answer pattern;
receiving a direction input from a user; and
determining whether to authenticate the user according to a result of comparing the received direction input with the correct answer pattern;
A computer program stored in a medium in order to execute a user authentication method using a CAPTCHA in combination with hardware, including a computer program. determining a correct answer pattern configured in at least one correct answer direction;
generating, for each of the at least one correct answer direction, an animation of an arrow object rotating with a movement distinguished from other directions in relation to the correct answer direction;
displaying a CAPTCHA interface including an arrangement of the generated animation corresponding to the correct answer pattern;
receiving a direction input from a user; and
determining whether to authenticate the user according to a result of comparing the received direction input with the correct answer pattern;
A computer-readable recording medium containing a program for executing a user authentication method using a CAPTCHA on a computer, including a.

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