KR102670518B1 - Method and apparatus for providing captcha system - Google Patents

Abstract

The present disclosure includes determining a correct answer pattern consisting of at least one correct answer direction; For each of the at least one correct answer directions, generating an animation of an arrow object rotating with a movement distinct from other directions with respect to the correct answer direction; displaying a CAPTCHA interface including an array of the generated animations corresponding to the correct answer pattern; Receiving a direction input from a user; and determining whether to authenticate the user based on a result of comparing the received direction input with the correct answer pattern. We propose a user authentication method and device using CAPTCHA.

Description

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

This 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 device for generating an animation-based directional input CAPTCHA and authenticating a user based on it.

CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a question-and-answer test automatically managed by a computer that determines whether a user is a human or a machine. CAPTCHA is used to limit 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 online games authenticates users through a CAPTCHA system while the user is playing the game in order to detect and sanction abnormal users who use programs that automatically play game content without user input. You can request. For another example, CAPTCHA can be used to prevent spam on online bulletin boards or webmail, prevent automatic membership registration, and prevent online voting manipulation.

A CAPTCHA system includes a device or process that automatically generates questions that humans can easily answer, but computers find difficult to answer, and requests responses. Respondents who provide correct answers to questions are considered human. On the other hand, respondents who fail to enter the correct answer are considered machines. A frequently used CAPTCHA system, for example, displays an image containing a character string on the screen and requests that the character string included in the image be input. 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 number of automated programs avoiding image-based CAPTCHA is increasing. For example, an automated program that attempts to evade CAPTCHA may include a process of analyzing an image provided by the CAPTCHA system to remove distortion, detecting a character string from the image from which the distortion has been removed, and automatically entering it.

Therefore, in order to protect information and services from these automated programs, a more improved method is required to distinguish between machines and humans.

The present disclosure seeks to provide a method and device for generating an animation-based directional input CAPTCHA and authenticating a user based on it.

According to various embodiments of the present disclosure, determining a correct answer pattern consisting of at least one correct answer direction; For each of the at least one correct answer directions, generating an animation of an arrow object rotating with a movement distinct from other directions with respect to the correct answer direction; displaying a CAPTCHA interface including an array of the generated animations corresponding to the correct answer pattern; Receiving a direction input from a user; and determining whether to authenticate the user based on a result of comparing the received direction input with the correct answer pattern. A user authentication method using CAPTCHA is provided.

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

According to one embodiment, the at least one correct answer direction may be determined to be a random direction.

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

According to one embodiment, generating the animation includes generating frames constituting an animation in which the arrow object rotates at a constant speed; and deleting the arrow object from a frame at which the arrow object points in the correct answer direction, thereby creating a blinking animation when the arrow object points in the correct answer direction. may include.

According to one embodiment, generating the animation includes generating frames constituting an animation in which the arrow object rotates at a constant speed; and inserting an additional frame at a point when the arrow object points in the correct answer direction, thereby creating an animation that temporarily stops when the arrow object points in the correct answer direction. may include.

According to one embodiment, generating the animation includes generating frames constituting an animation in which the arrow object rotates at a constant speed; and additionally inserting a frame before or after the arrow object points in the correct answer direction, thereby creating an animation that rotates at a slower speed than the constant speed when the arrow object points in the correct answer direction. may include.

According to one embodiment, generating the animation includes generating frames constituting an animation in which the arrow object rotates at a constant speed; and reversing the order of frames before and after the animation when the arrow object points in the correct answer direction, thereby creating a shaking animation when the arrow object points in the correct answer direction. may include.

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

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

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

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

According to one embodiment, the CAPTCHA interface includes a direction input interface for receiving a direction input, and the step of receiving the direction input includes a user input of clicking or touching a point indicating 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; memory to store instructions; and at least one processor functionally connected to the display, the user input unit, and the memory, and 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, and for each of the at least one correct answer direction, has a movement that is distinct from other directions with respect to the correct answer direction. Generating an animation of a rotating arrow object, displaying a CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) interface, including an array of the generated animation corresponding to the correct answer pattern, through the display, It may be set to receive a direction input from a user input unit and determine whether to authenticate the user based on a result of comparing the received direction input with the correct answer pattern.

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

According to one embodiment, the at least one correct answer direction may be determined to be a random direction.

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

According to one 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 the frame at which the arrow object points in the correct direction. , it can be set to generate a blinking animation when the arrow object points in the correct direction.

According to one 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 when the arrow object points in the correct direction, The arrow object may be set to generate an animation that temporarily stops when it points in the correct direction.

According to one 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 the arrow object points in the correct direction. , it can be set to generate an animation that rotates at a slower speed than the constant speed when the arrow object points in the correct direction.

According to one 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 preceding and following frames in the animation when the arrow object points in the correct direction. Conversely, the arrow object can be set to create a shaking animation when pointing in the correct direction.

According to one embodiment, the at least one processor includes a first arrow object that rotates in the correct answer direction with a movement distinct from other directions, and a first arrow object that rotates at a speed different from the first arrow object and moves to the first arrow object. It can be set to generate an animation including an overlapping second arrow object.

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

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

According to one embodiment, the user input unit may include a keyboard, and the at least one processor may be set to receive a user's direction input through direction keys of the keyboard.

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

According to various embodiments of the present disclosure, a communication unit receiving a user authentication request from a server; display; user input unit; memory to store instructions; and at least one processor functionally connected to the communication unit, the display, the user input unit, and the memory, and configured to execute the instructions. A user terminal is provided for authenticating a user using CAPTCHA. The at least one processor executes the instructions to determine, based on the user authentication request, a correct answer pattern consisting of at least one correct answer direction, and for each of the at least one correct answer direction, in relation to the correct answer direction. Create an animation of an arrow object rotating with movement distinct from other directions, and create a CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) interface that includes an array of the generated animations corresponding to the correct answer pattern. displays through the display, receives a direction input from the user input unit, determines whether to authenticate the user according to the result of comparing the received direction input with the correct answer pattern, and controls the communication unit to determine whether to authenticate the user. It can be set to transmit to the server.

According to various embodiments of the present disclosure, determining a correct answer pattern consisting of at least one correct answer direction; For each of the at least one correct answer directions, generating an animation of an arrow object rotating with a movement distinct from other directions with respect to the correct answer direction; displaying a CAPTCHA interface including an array of the generated animations 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 to execute a user authentication method using CAPTCHA in combination with hardware, including a provided.

According to various embodiments of the present disclosure, determining a correct answer pattern consisting of at least one correct answer direction; For each of the at least one correct answer directions, generating an animation of an arrow object rotating with a movement distinct from other directions with respect to the correct answer direction; displaying a CAPTCHA interface including an array of the generated animations 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 CAPTCHA on a computer is provided. do.

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

According to various embodiments of the present disclosure, a more effective method for distinguishing automated programs from humans can be provided.

1 illustrates a service provision system including a server and a user terminal, according to various embodiments of the present disclosure.
FIG. 2 is a diagram illustrating a system for authenticating a user using CAPTCHA according to various embodiments of the present disclosure.
Figure 3 is a flowchart of a method for authenticating a user using CAPTCHA, according to various embodiments of the present disclosure.
FIG. 4 is a diagram for explaining a CAPTCHA interface according to various embodiments of the present disclosure.
FIG. 5 is a diagram illustrating a method of creating an animation of an arrow object according to an embodiment of the present disclosure.
FIG. 6 is a diagram for explaining a method of creating an animation of an arrow object according to another embodiment of the present disclosure.
7A to 7D are diagrams for explaining the operation of the CAPTCHA interface according to an embodiment of the present disclosure.
FIG. 8 is a diagram for explaining a method of creating an animation of an arrow object according to another embodiment of the present disclosure.
FIG. 9 is a diagram illustrating a method of creating an animation of an arrow object according to another embodiment of the present disclosure.
FIG. 10 is a diagram for explaining a CAPTCHA interface according to various embodiments of the present disclosure.
FIG. 11 is a diagram for explaining a CAPTCHA interface according to various embodiments of the present disclosure.
Figure 12 is a diagram showing an embodiment using the CAPTCHA interface of the present disclosure.
Figure 13 is a diagram showing another embodiment using the CAPTCHA interface of the present disclosure.
FIG. 14 is a diagram for explaining the detailed configuration of an electronic device according to various embodiments of the present disclosure.
Figure 15 is a diagram for explaining the detailed configuration of a server according to various embodiments of the present disclosure.
FIG. 16 is a diagram for explaining the 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 depicted in the attached drawings. Additionally, 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 contents depicted in the attached drawings. The same reference numbers or symbols shown in each drawing indicate parts or components that perform substantially the same function.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. Terms are used only to distinguish one component from another. For example, a first component may be named a second component without departing from the scope of the present invention, and similarly, the second component may also be named a first component. The term 'and/or' includes a combination of a plurality of related items or any one item among a plurality of related items.

The terms used herein are used to describe embodiments and are not intended to limit and/or limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as include or have are intended to designate the presence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification, but are not intended to indicate the presence of one or more other features, numbers, or steps. , it should be understood that this does not exclude in advance the possibility of the presence or addition of operations, components, parts, or combinations thereof.

Throughout the specification, when a part is said to be connected to another part, this includes not only cases where it is directly connected, but also cases where it is electrically connected with another element in between. Additionally, when it is said that a part includes a certain component, this does not mean that other components are excluded, but that it can further include other components, unless specifically stated to the contrary. In addition, terms such as "... unit" and "module" used in the specification refer to a unit that processes at least one function or operation, which may be implemented as hardware or software, or as 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 output from the user terminal through communication with the user terminal (all output devices from the user terminal, such as screen display, sound output, vibration output, lamp emission, etc.) And it may mean that the user terminal provides data for performing a certain operation. Of course, the user terminal may control output from the user terminal using pre-stored data, and is not limited to the above example.

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 linked to the user (or user account). .

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

In the following disclosure, user, player, user, and user account may be used with the same meaning. It should be understood that the user terminal in this disclosure may refer to a user, player, user, user account, or device used by them, depending on the context. It should be understood that in this disclosure, user, player, user, and user account may refer to the avatar or character they operate or the device used by them, depending on the context.

1 illustrates a service provision 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 provide online activities to at least one user terminal 110 to 160 at the same time.

According to an embodiment of the present disclosure, the server 170 may include a single server, a collection of servers, a cloud server, etc., and is not limited to the above example. Server 170 provides various online activities and may include a database that stores data for online activities. Additionally, the server 170 may include a payment server that generates and processes payment events. In one embodiment, server 170 may be a game providing device.

According to an embodiment of the present disclosure, a network refers to a connection established (or formed) using all communication methods, and refers to a communication network connected through all communication methods that transmits and receives data between terminals and terminals or between terminals and servers. can do.

All communication methods may include all communication methods, such as communication through a certain communication standard, a certain frequency band, a certain protocol, or a certain channel. For example, it may include Bluetooth, BLE, Wi-Fi, Zigbee, 3G, LTE, and ultrasonic communication methods, and may include short-range 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-distance communication method may mean a communication method that allows communication only when the device (terminal or server) performing communication is within a predetermined range, for example, Bluetooth, It may include NFC, etc. A long-distance communication method may refer to a communication method in which a device performing communication can communicate regardless of the distance. For example, a long-distance communication method may refer to a method in which two devices that communicate through a repeater such as an AP can communicate even when they are over a predetermined distance, and can use cellular networks (3G, LTE) such as SMS and phone calls. It may include the communication method used. Of course, it is not limited to the above examples. The meaning of providing online activities using a network may include the meaning that communication between the server and the terminal can be performed through any communication method. In one embodiment, information transmitted and received between the user terminal 110 and the server 170 may be encrypted.

Throughout the specification, at least one user terminal 110 to 160 refers to a personal computer 110, a tablet 120, a cellular phone 130, a laptop 140, and a smart phone. (150), TV 160, as well as various electronic devices such as PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), navigation, MP3 players, digital cameras, refrigerators, washing machines, and vacuum cleaners. It is not limited to examples. In one embodiment, at least one user terminal 110 to 160 may be a game providing device.

According to an embodiment of the present disclosure, online activities may include online games, portal services, and SNS (Social Network Service), but are not limited to the above examples. Additionally, online games can include various genres such as sports, MMORPG, AOS, FPS, TCG, and CCG. Additionally, online games may be games that pit users against each other, or between users and computers (for example, artificial intelligence). It may also be a construction or decoration type game rather than a competition type game. Of course, it is not limited to the above examples and there are no restrictions on the form of online games.

According to various embodiments of the present disclosure, the server 170 may request user authentication from the user terminals 110 to 160 that are attempting to use the service or are using the service. Based on the user authentication results of the user terminals 110 to 160, 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.

According to various embodiments of the present disclosure, the user terminals 110 to 160 may request the user to perform user authentication using CAPTCHA based on receiving a user authentication request from the server 170. In one embodiment, the user terminals 110 to 160 determine a correct answer pattern consisting of at least one correct answer direction, and for each of the at least one correct answer direction, make a movement that is distinct from other directions with respect to the correct answer direction. Create an animation of a rotating arrow object, display a CAPTCHA interface containing an array of the generated animations corresponding to the correct answer pattern, receive directional input from a user, and receive directional input and the correct answer pattern. Depending on the results of the comparison, it can be decided 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 necessary without a request from the server 170 and 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's use of the service depending on the user authentication result.

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

Referring to FIG. 2, a system that authenticates a user using CAPTCHA may include a user terminal 110 and a server 170. The user terminal 110 is an electronic device that provides online activities provided by a server to users 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 is a server device that provides services and may correspond to the server 170 of FIG. 1. 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 attempting to use the service or using the service. In one embodiment, the user authentication request unit 210 may request user authentication when the user logs in to the service. In one embodiment, the user authentication request unit 210 may request user authentication when the user performs a specific online activity that is preset to require user authentication.

In one embodiment, the user authentication request unit 210 may request user authentication if it is determined that the user is suspected to be a machine. For example, the user authentication request unit 210 may detect abnormal user activity in real time and request user authentication from the user for whom abnormal activity has been detected. Abnormal user activity may include the user performing a large amount of online activity in a short period of time, the user repeating the same actions, the user's account value fluctuating rapidly, the user changing account information, or other suspected abnormal users. There may be transactions with users, etc. Of course, it is not limited to the above example.

The CAPTCHA generation unit 230 may generate a CAPTCHA to determine 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 consisting of at least one correct answer direction. In one embodiment, the correct answer pattern may be a directional arrangement consisting of a combination of a plurality of directions. In one embodiment, the correct answer pattern may consist of a predetermined number of correct answer directions.

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

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

In one embodiment, the CAPTCHA generator 230 includes a first arrow object that rotates with a movement distinct from other directions with respect to the correct answer direction, and a first arrow object that rotates at a different speed from the first arrow object and An animation including a second arrow object that overlaps can be created. In one embodiment, the second arrow object may be different from the first arrow object in at least one of hue, saturation, or 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 array 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 the correct answer pattern through the display 250.

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

The user input unit 270 refers to a means through which a user inputs data to control the user terminal 110. For example, the user input unit 270 may include devices that can receive various types of user input, such as a keyboard, physical button, mouse, joystick, touch screen, touch pad, camera, or microphone. In various embodiments, the user input unit 270 may receive a direction input for entering the correct answer to the CAPHCHA from the user after the CAPTCHA interface is displayed.

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 generating unit 230 to determine whether the user entered the correct answer to the CAPTCHA. You can. In one embodiment, when the correct answer direction is determined to be one of a predetermined number of directions (e.g., 4 directions, 8 directions, or 16 directions, etc.), the electronic device determines that the received direction input and the entire correct answer pattern are You can determine whether they completely match. In another embodiment, when the correct answer direction is determined to be a random 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 one embodiment, the user authentication unit 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 decision result received from the user terminal 110. If the user enters the correct answer to the CAPTCHA, the user authentication unit 295 may determine that the user is a human and allow the user to use the service. If the user fails to enter the correct answer to the CAPTCHA, the user authentication unit 295 may determine that the user is a machine and block the user's use of the service. In one embodiment, if the user fails to enter the correct answer to the CAPTCHA, the user authentication request unit 210 may request user authentication again.

In one 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 decide whether to perform user authentication on its own 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 depending on whether the user entered the correct answer to the CAPTCHA.

In another embodiment, some or all of the functions of the CAPTCHA creation unit 230 and the user authentication unit 290 of the user terminal 110 may be performed in 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 with a movement that is distinct 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 for authenticating a user using CAPTCHA, according to various embodiments of the present disclosure. This operation is performed using 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 It 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 consisting of at least one correct answer direction. In one embodiment, the correct answer pattern may be a directional arrangement consisting of a combination of a plurality of directions. In one embodiment, the correct answer pattern may consist of a predetermined number of correct answer directions.

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

In other embodiments, the correct direction may be determined to be an arbitrary direction. At this time, at least one correct answer direction may be expressed as an angle measured from a predetermined reference direction. For example, when the up (↑) direction is used as the reference direction, the correct answer direction can be expressed as an angle measured clockwise from the reference direction. In this case, the correct answer pattern may be in the form of {235, 30, 75, 110}, {142, 313, 90, 228, 57}.

In step S320, the electronic device may generate, for each of at least one correct answer direction, an animation of an arrow object rotating with a movement that is distinct from other directions with respect to the correct answer direction. In one 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 answers that make up the correct answer pattern, an animation of four rotating arrow objects related to each correct direction can be created.

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

In one embodiment, the electronic device includes a first arrow object that rotates with a movement distinct from other directions with respect to the correct answer direction, and an arrow object that rotates at a different speed from the first arrow object and overlaps the first arrow object. 2 You can create animations that include arrow objects. In one embodiment, the second arrow object may be different from the first arrow object in at least one of hue, saturation, or transparency. In another embodiment, the second arrow object may have the same hue, saturation, and transparency as the first arrow object.

In step S330, the electronic device may display a CAPTCHA interface including an array of animations of arrow objects corresponding to the correct answer pattern. In one embodiment, the electronic device may request the user to enter the correct answer pattern. In one embodiment, the electronic device may display a direction input interface for entering the correct answer to the CAPTCHA.

In step S340, the electronic device may receive a direction input from the user. In one embodiment, when the correct answer direction is determined to be one of up, down, left, and right, the electronic device may receive the user's direction input through the direction keys on the keyboard. In another embodiment, the electronic device may receive an input from a user who clicks or touches a point indicating a direction through a direction input interface.

In step S350, the electronic device may determine whether to authenticate the user based on the result of comparing the received direction input and the correct answer pattern. In one embodiment, when the correct answer direction is determined to be one of a predetermined number of directions (e.g., 4 directions, 8 directions, or 16 directions, etc.), the electronic device determines that the received direction input and the entire correct answer pattern are You can determine whether they completely match. In another embodiment, when the correct answer direction is determined to be a random 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.

If the received direction input matches the correct answer pattern, the electronic device may determine that the user is a human and allow the user to use the service. In one embodiment, if the received direction input and the correct answer pattern do not match, the electronic device may determine the user to be a machine and block the user's use of the service. In one embodiment, if the received directional input and the correct answer pattern do not match, the electronic device returns to step S310 to determine a new correct answer pattern and displays a CAPTCHA interface including an animation of an arrow object corresponding to the new correct answer pattern. You can.

According to the above-described embodiments, a CAPTCHA is provided that presents a rotating arrow with a distinct movement in the correct direction and requests the user to enter the correct answer direction. This CAPTCHA cannot determine the correct answer from a still image, and the correct answer can only be determined by recognizing that the movement of the arrow object changes in a specific direction. In the case of moving images, the difficulty of computer analysis and recognition of the correct answer is significantly higher than that of static images. On the other hand, humans can process movements very quickly, accurately, and without difficulty. Therefore, CAPTCHA according to the embodiments of the present disclosure cannot be easily avoided by an automated program, and by using CAPTCHA according to the embodiments of the present disclosure, humans and automated programs can be more efficiently and accurately distinguished.

FIG. 4 is a diagram for explaining a CAPTCHA interface according to various embodiments of the present disclosure. The CAPTCHA interface 400 may be an interface that displays automatically generated questions and requests the user's response to the questions 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 the correct answer pattern. Of course, the CAPTCHA interface 400 is not limited to the example in 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 included in the CAPTCHA interface 400. may be included. For example, only four arrow objects are shown in Figure 4, but this only applies when the correct answer pattern consists of four correct directions, and the number of arrow objects is smaller depending on the number of correct directions that make up the correct answer pattern. There may 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 are rotated to have a movement distinct from other directions with respect to the correct answer direction. It can be set to do so. In various embodiments, the arrow objects 410, 411, 412, and 413 may be configured to rotate at a constant speed and make certain distinct movements when pointing in the correct direction. For example, if the correct answer pattern is determined to be 'low right, bottom left (→↓↓←)', the first arrow object 410 makes 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 can be set to take a predetermined movement when pointing downward, and the fourth arrow object 413 can be set to take a predetermined movement when pointing left.

In one embodiment, the basic rotation speed and rotation direction of the arrow objects 410, 411, 412, and 413 may all be constant. That is, when they are not pointing in 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 rotation direction may be determined for each arrow object 410, 411, 412, and 413. That is, when they are not pointing in the correct direction, the arrow objects 410, 411, 412, and 413 may be rotating at their respective speeds and directions.

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

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

FIG. 5 is a diagram illustrating a method of creating an animation of an arrow object according to an embodiment of the present disclosure.

Referring to FIG. 5, in order to create an animation of one arrow object, the basic frames 500 that constitute an animation in which the arrow object rotates once at a constant speed and an animation in which the arrow object makes distinct movements in the correct direction are shown. Constituent deformation frames 550 are shown.

In one embodiment, the electronic device may generate basic frames 500 that constitute an animation in which an 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 those skilled in the art will understand that the number of frames may differ from that shown, depending on the number of frames per second (fps) and the rotation speed of the arrow object. 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 created to construct an animation in which the arrow object rotates once.

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

In one embodiment, the electronic device may generate modified frames 550 by deleting the arrow object from the determined correct direction frame. In one embodiment, the electronic device may generate 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 modified frames 550 created in this way, an animation can be created in which the arrow object rotates at a constant speed and blinks when pointing in the correct direction.

FIG. 6 is a diagram for explaining a method of creating an animation of an arrow object according to another embodiment of the present disclosure.

Referring to FIG. 6, in order to create an animation of one arrow object, the basic frames 600 that make up the animation in which the arrow object rotates once at a constant speed and the animation in which the arrow object moves distinctly in the correct direction are shown in FIG. Constituent deformation frames 650 are shown. In the case of the basic frames 600, since they correspond to the basic frames 500 of FIG. 5, redundant description will be omitted.

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

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

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

Referring to FIGS. 7A to 7D, an example is shown in which the CAPTCHA interface including arrow objects 410, 411, 412, and 413 that rotate with distinct movements in the correct answer direction changes in each frame. Figures 7A to 7D show 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 Figure 6. However, of course, it is not limited to what is shown. In addition, only four arrow objects are shown in FIGS. 7A to 7D, but this is limited to the case where the correct answer pattern consists of four correct directions, and the number of arrow objects may be smaller or smaller depending on the number of correct answers that make up the correct answer pattern. There could be more.

In one embodiment, the electronic device determines a correct answer pattern, corresponds to each correct direction included in the correct answer pattern, and rotates an arrow object 410, 411, 412 to have a movement that is distinct from other directions with respect to the correct answer direction. , 413) animations can be created. The electronic device may display a CAPTCHA interface including an animated arrangement of the generated arrow objects 410, 411, 412, and 413.

In one embodiment, the direction that each arrow object 410, 411, 412, and 413 initially points may be arbitrarily determined. The electronic device may display each arrow object in frame 1 so that it points in the above direction. Thereafter, each time the frame is switched, each arrow object 410, 411, 412, and 413 may be displayed 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 in each frame may be constant.

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

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

As mentioned above, it is difficult for computers to recognize movement from video. However, an automated program can capture many frames and attempt to stochastically find the correct direction. For example, according to the method for deleting an arrow object from a frame as shown in the embodiment shown in FIG. 5, an automated program may be able to capture frames and estimate the correct direction from frames without an 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 will be able to capture the frames and estimate the direction in which the arrow object points most frequently as the correct direction.

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

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

Referring to FIG. 8, in order to create an animation of one arrow object, the basic frames 800 that make up the animation in which the arrow object rotates once at a constant speed and the animation in which the arrow object moves distinctly in the correct direction are shown in FIG. Constituent deformation frames 850 are shown. In the case of the basic frames 800, since they correspond to the basic frames 500 of FIG. 5, redundant description will be omitted.

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

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

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

FIG. 9 is a diagram for explaining a method of creating an animation of an arrow object according to another embodiment of the present disclosure.

Referring to FIG. 9, in order to create an animation of one arrow object, the basic frames 900 that make up the animation in which the arrow object rotates once at a constant speed and the animation in which the arrow object makes distinct movements in the correct direction are shown. Constituent deformation frames 950 are shown. In the case of the basic frames 900, since they correspond to the basic frames 500 of FIG. 5, redundant description will be omitted.

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

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

According to the above-described embodiments, the direction in which the arrow object points is different for each frame, and there is no difference in the frequency of the direction in which the arrow object points. Therefore, the automated program can prevent attempts to stochastically find the correct direction by capturing many frames.

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

According to various embodiments of the present disclosure, the CAPTCHA interface 1000 includes a question interface 1020 including first arrow objects 1010, 1011, 1012, and 1013 and second arrow objects 1030, 1031, 1032, and 1033. ) may include. Of course, the CAPTCHA interface 1000 is not limited to the example in 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 included in the CAPTCHA interface 1000. may be included. For example, only four arrow objects are shown in Figure 10, but this only applies when the correct answer pattern consists of four correct directions, and the number of arrow objects is smaller depending on the number of correct directions that make up the correct answer pattern. There may 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 make movements that are distinct from other directions in relation to the correct answer direction. It can be set to rotate to have 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 distinct movement when pointing in the direction of the correct answer. Since the first arrow objects 1010, 1011, 1012, and 1013 may correspond to the arrow objects 410, 411, 412, and 413 of FIG. 4, redundant descriptions will be omitted. A method of generating animation of the first arrow objects 1010, 1011, 1012, and 1013 may follow various embodiments previously described 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 with the first arrow objects 1010, 1011, 1012, and 1013, respectively, and the first arrow objects 1010 and 1011 , 1012, 1013) and may be set to rotate at a different speed. The second arrow objects 1030, 1031, 1032, and 1033 can rotate at a constant speed in all directions. That is, the electronic device that generates the CAPTCHA interface 1000 includes a second arrow object 1030, which is a dummy arrow object rotating at a different speed at the same position, for each position of the first arrow object 1010, 1011, 1012, and 1013. , 1031, 1032, 1033) can be generated.

In one embodiment, the second arrow objects 1030, 1031, 1032, and 1033 may rotate at a faster rate than the first arrow objects 1010, 1011, 1012, and 1013. If the second arrow object (1030, 1031, 1032, 1033) rotates very quickly, the human will rather ignore the movement of the second arrow object (1030, 1031, 1032, 1033). However, since the machine analyzes the first arrow objects (1010, 1011, 1012, 1013) and the second arrow objects (1030, 1031, 1032, 1033) equally in every frame, the second arrow objects (1030, 1031, 1032, 1033) can be an obstacle to the machine estimating the correct answer to CAPTCHA. Therefore, CAPTCHA according to the above-described embodiment cannot be easily avoided by an automated program, and by using CAPTCHA according to the above-described embodiment, automated programs can be more efficiently and accurately identified by distinguishing them from humans.

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

According to various embodiments of the present disclosure, the question interface 1020 includes a series of first arrow objects (1010, 1011, 1012, 1013) and second arrow objects (1030, 1031, 1032, 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 enter the correct answer to the CAPTCHA. In one embodiment, question interface 1020 may be overlaid on the background screen.

In one embodiment, the configuration and form of the CAPTCHA interface 1000 may be set differently depending on the level of difficulty. The configuration and form of the CAPTCHA interface 1000 can be set so that the higher the difficulty level, the more difficult it is to recognize the correct answer to the CAPTCHA. In other words, the higher the difficulty level, the more difficult it is to recognize the arrow object itself, or the arrow object may be set to make a distinct movement in the correct direction.

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

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

Difficulty level Add a second arrow object Saturation of arrow objects Transparency of arrow objects question interface transparency Level 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 can be adjusted depending on the user's skill level. For example, when a user enters the correct answer to the CAPTCHA interface 1000 of a specific difficulty level, the CAPTCHA interface 1000 of a higher difficulty level can be used when subsequently requesting user authentication from the same user. For another example, if the user fails to enter the correct answer to the CAPTCHA interface 1000 of a specific difficulty level, the CAPTCHA interface 1000 of a lower difficulty level can be used when requesting user authentication from the same user in the future.

In one embodiment, the difficulty level may be adjusted based on the user's confidence or the degree to which the user suspects the user is a machine. For example, in the case of regular user authentication, the CAPTCHA interface 1000 with a low difficulty level can be used, and when abnormal user behavior is detected and user authentication is required, the CAPTCHA interface 1000 with a higher difficulty level can be used. For example, when a user's abnormal behavior is detected multiple times for the same user, the CAPTCHA interface 1000 with a higher difficulty level can be used as the number of times user authentication is requested increases. For example, if the detection process that detects the user's abnormal behavior evaluates the user's trustworthiness 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.

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

According to various embodiments of the present disclosure, the CAPTCHA interface 1100 includes a question interface 1120 including first arrow objects 1110, 1111, 1112, and 1113 and second arrow objects 1130, 1131, 1132, and 1133. ) may include. 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 object (1030, 1031, 1032, 1033), and the question interface (1020), so redundant description will be omitted.

In one 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 Figure 10, the computer cannot distinguish between the first arrow objects (1110, 1111, 1112, 1113) and the second arrow objects (1130, 1131, 1132, 1133) from the captured frames. . Therefore, even if the automated process captures and compares the frame in the correct direction with the frame immediately before or after it to estimate the correct answer to the CAPTCHA, it is difficult to determine that the arrow object is moving differently in the correct direction. Accordingly, an automated program can be prevented from attempting to find the correct direction by capturing successive frames.

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

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

In one 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 enter the correct answer pattern. In one embodiment, when the correct answer direction is determined to be one of up, down, left, and right, the electronic device may receive the user's direction input through the direction keys on the keyboard.

In one 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 directional input is an operation to move 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 displayed. In one embodiment, when the CAPTCHA interface 1220 is displayed, operation of the application may be paused.

In one embodiment, if the user's directional input matches the correct answer pattern, the CAPTCHA interface 1220 disappears from the screen, and use of the service by the user can resume. In one embodiment, if the user's directional 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 certain penalty regarding service use. In one embodiment, if the user's directional input does not match the correct answer pattern, a CAPTCHA interface 1220 corresponding to the new correct answer pattern may be displayed, requesting the user to enter the correct answer pattern again.

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

Figure 13 shows an example of an application screen on which the CAPTCHA interface 1320 and the direction input interface 1340 are displayed on the user terminal. In one 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 enter the correct answer pattern. Since the CAPTCHA interface 1320 may correspond to the CAPTCHA interface 1220 of FIG. 12, redundant description will be omitted.

In one embodiment, when the CAPTCHA interface 1320 is displayed, a direction input interface 1340 for the user to input the correct answer to the CAPTCHA may also be displayed. 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 be set to be used only for inputting the correct answer to the CAPTCHA and not for manipulating the existing application.

In various embodiments, the direction input interface 1340 may be an interface for inputting a direction by receiving a user's click or touch input. In one embodiment, the direction input interface 1340 may include direction buttons corresponding to predetermined correct directions. In FIG. 13, eight direction buttons corresponding to eight correct answer directions are shown as an example, but the present invention is not limited thereto. In another embodiment, the direction input interface 1340 may include a direction pad that allows input of an arbitrary direction. When a user's click or touch input is obtained through the directional pad, the electronic device may determine the direction from the reference point to the click or touch point as the direction input by the user.

In one embodiment, when the user's directional input matches the correct answer pattern, the CAPTCHA interface 1320 and the directional input interface 1340 disappear from the screen, and use of the service by the user can resume.

FIG. 14 is a diagram for explaining the detailed configuration of an electronic device according to various embodiments of the present disclosure.

As shown in FIG. 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. You can. However, not all components shown in FIG. 14 are essential components of the electronic device 1400. The electronic device 1400 may be implemented with more components than those shown in FIG. 14 , or the electronic device 1400 may be implemented with 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 one embodiment of the present disclosure, the processor 1410 typically controls the overall operation of the electronic device 1400. For example, the processor 1410 can generally control the output unit 1430, memory 1450, user input unit 1470, and communication unit 1490 by executing a program stored in the memory 1450. The processor 1410 may control the operation of the electronic device 1400 in this specification by controlling the output unit 1430, memory 1450, user input unit 1470, and communication unit 1490.

According to one embodiment of the present disclosure, the processor 1410 determines a correct answer pattern consisting of at least one correct answer direction, and for each of the at least one correct answer direction, a movement that is distinct from other directions with respect to the correct answer direction. Create an animation of a rotating arrow object, display a CAPTCHA interface containing an array of the created animation corresponding to the correct answer pattern through the display of the output unit 1430, and display the CAPTCHA interface in the direction from the user input unit 1470. It may be set to receive an input and determine whether to authenticate the user based on 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 that constitute an animation in which the arrow object rotates at a constant speed, and deletes the arrow object from the frame at which the arrow object points in the correct direction. Thus, the arrow object can be set to generate a blinking animation when it 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 the point when the arrow object points in the correct direction, The arrow object may be set to generate an animation that temporarily stops when it points in the correct direction.

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

According to an embodiment of the present disclosure, the processor 1410 generates frames that make up an animation in which the arrow object rotates at a constant speed, and in the animation, the order of frames before and after the arrow object points in the correct direction. Inverted, it can be set to create a shaking animation when the arrow object points in the correct direction.

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

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 array of animations of arrow objects corresponding to the 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 programs for processing and control of 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, the processor 1410 may execute a method of authenticating a user using CAPTCHA using a program stored in the memory 1450.

According to an embodiment of the present disclosure, the memory 1450 is a flash memory type, hard disk type, multimedia card micro type, or card type memory (e.g. (e.g. SD or It may include at least one type of storage medium among (Only Memory), magnetic memory, magnetic disk, and optical disk. Additionally, 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 refers to a means for a user to input data to control the electronic device 1400. For example, the user input unit 1470 may include devices that can receive various types of user input, such as a keyboard, physical button, mouse, joystick, touch screen, touch pad, camera, or microphone. According to an embodiment of the present disclosure, the user input unit 1470 may obtain the user's direction input for entering the correct answer to the CAPTCHA. According to one embodiment of the present disclosure, the user input unit 1470 may receive a user's direction input through the direction keys of the keyboard. According to an embodiment of the present disclosure, an input from a user who clicks or touches a point indicating a direction may be received through a direction input interface.

The communication unit 1490 can 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 authentication server under the control of the processor 1410. Additionally, the communication unit 1490 may obtain user information or user input through communication with an external interface.

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

Additionally, the method of authenticating a user using CAPTCHA can be performed individually or jointly by the server and the user terminal. The configuration of the server and user terminal is described in more detail in FIGS. 15 and 16 below.

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

As shown in FIG. 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 components shown in FIG. 15 are essential components of the server 1500. The server 1500 may be implemented with more components than those shown in FIG. 15, or the server 1500 may be implemented with fewer components than those shown in FIG. 15.

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

According to one 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 if it is determined that user authentication is necessary, the communication unit ( A user authentication request may be transmitted to the user terminal 1600 through 1530). 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 re-authentication from the user, depending on the received user authentication result.

According to one 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 if it is determined that user authentication is required, at least one The correct answer pattern consisting of the correct answer direction of can be determined. 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. Depending on the user authentication result, 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 an embodiment of the present disclosure, the operation of the processor 1510 may correspond to the operation of the processor 1410 of the electronic device 1400 described in FIG. 14, and therefore detailed description is 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. Additionally, according to an embodiment of the present disclosure, the communication unit 1530 is capable of transmitting and receiving data to and from the user terminal 1600, and the data transmitted and received to and from the user terminal 1600 may be stored in the user terminal 1600 or within the user terminal 1600. It may contain control data that controls the included program.

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 programs for processing and control of the processor 1510, and may also store data input to or output from the server 1500.

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

According to an embodiment of the present disclosure, the memory 1550 is a flash memory type, hard disk type, multimedia card micro type, or card type memory (e.g. (e.g. SD or It may include at least one type of storage medium among (Only Memory), magnetic memory, magnetic disk, and optical disk. Additionally, 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.

Additionally, 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, or the server 1500 and the user terminal 1600 may be individually performed. It may be performed, or it may be performed in the electronic device 1400.

FIG. 16 is a diagram for explaining the 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. You can. However, not all components shown in FIG. 16 are essential components of the user terminal 1600. The user terminal 1600 may be implemented with more components than those shown in FIG. 16 , or the user terminal 1600 may be implemented with fewer components than the components shown in FIG. 16 .

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

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 consisting of at least one correct answer direction based on receiving the user authentication request, and for each of the at least one correct answer direction, the correct answer pattern Create an animation of a rotating arrow object with a movement distinct from other directions with respect to the direction, display a CAPTCHA interface containing an array of the generated animations corresponding to the correct answer pattern, and receive directional input from the user. And, depending on the result of comparing the received direction input and 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 the correct answer pattern from the server 1500 through the communication unit 1690. According to an embodiment of the present disclosure, the processor 1610 generates, for each of at least one correct answer direction constituting the correct answer pattern, an animation of an arrow object rotating with a movement that is distinct from other directions with respect to the correct answer direction. Then, a CAPTCHA interface containing an array of the generated animations 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, the operation of the processor 1610 may correspond to the operation of the processor 1410 of the electronic device 1400 described in FIG. 14, and therefore detailed description is omitted.

The output unit 1630 may display and output information processed in the user terminal 1600. The output unit 1630 includes a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display ( It may include at least one of a 3D display and an electrophoretic display. When the output unit 1630 and the touch pad form a layered structure to form a touch screen, the output unit 1630 can be used as an input device in addition to an output device. Additionally, the output unit 1630 may include an LED lamp, a vibration motor, a speaker, a flash, etc., but is not limited to the above examples.

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 array of animations of arrow objects corresponding to the 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 programs for processing and control of the processor 1610, and may also 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 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, hard disk type, multimedia card micro type, or card type memory (e.g. (e.g. SD or It may include at least one type of storage medium among (Only Memory), magnetic memory, magnetic disk, and optical disk. Additionally, 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 includes a key pad, a dome switch, a voice input interface, a fingerprint input interface, and a touch input interface (contact capacitive type, pressure resistive type, infrared detection). method, surface ultrasonic conduction method, integrated tension measurement method, piezo effect method, etc.), cameras, jog wheels, jog switches, etc., and various sensors such as acceleration sensors, position sensors, temperature sensors, and optical sensors. It can also be linked to the user interface. However, the user input unit 1670 is not limited to this and may include a device that supports various inputs.

According to an embodiment of the present disclosure, the user input unit 1470 may obtain the user's direction input for entering the correct answer to the CAPTCHA. According to one embodiment of the present disclosure, the user input unit 1470 may receive a user's direction input through the direction keys of the keyboard. According to an embodiment of the present disclosure, an input from a user who clicks or touches a point indicating a direction may be received through a 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. In addition, according to an embodiment of the present disclosure, the communication unit 1690 can transmit and receive data with the server 1500, and the data transmitted and received with the server 1500 includes the user terminal 1600 or the user terminal 1600. It may contain control data that controls 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 the user's directional input to the server 1500 under the control of the processor 1610.

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

Additionally, according to an embodiment of the present disclosure, the communication unit 1690 transmits and receives wireless signals with 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 voice call signals, video call signals, or text/multimedia message transmission and reception.

The device described above may be implemented with hardware components, software components, and/or a combination of hardware components and software components. For example, devices and components described in 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), etc. , may be implemented using one or more general-purpose or special-purpose computers, such as a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. A processing device may execute an operating system (OS) and one or more software applications that run on the operating system. Additionally, a processing device may access, store, manipulate, process, and generate data in response to the execution of software. For ease of understanding, a single processing device may be described as being used; however, those skilled in the art will understand that a processing device includes multiple processing elements and/or multiple types of processing elements. It can be seen that it may include. For example, a processing device may include a plurality of processors or one processor and one controller. Additionally, other processing configurations, such as parallel processors, are possible.

Software may include a computer program, code, instructions, or a combination of one or more of these, which may configure a processing unit to operate as desired, or may be processed independently or collectively. You can command the device. Software and/or data may be used on any type of machine, component, physical device, virtual equipment, computer storage medium or device to be interpreted by or to provide instructions or data to a processing device. , or may be permanently or temporarily embodied in a transmitted signal wave. Software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored on 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 on a computer-readable medium. Computer-readable media may include program instructions, data files, data structures, etc., singly or in combination. 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 computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. 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 limited examples and drawings, various modifications and variations can be made by those skilled in the art from the above description. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent.

Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the claims described below.

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 consisting of at least one correct answer direction;
For each of the at least one correct answer directions, generating an animation consisting of a plurality of frames of an object rotating with a movement distinct from other directions with respect to the correct answer direction;
displaying a CAPTCHA interface including an array of the generated animations corresponding to the correct answer pattern;
Receiving a direction input from a user; and
A user authentication method using CAPTCHA, comprising the step of determining whether to authenticate a user based on a result of comparing the received direction input with the correct answer pattern. The user authentication method according to claim 1, wherein the direction of the at least one correct answer is determined as one of up, down, left, and right, respectively. The user authentication method according to claim 1, wherein the direction of the at least one correct answer is determined to be a random direction. According to paragraph 1,
The correct answer pattern consists of a predetermined number of correct answer directions,
The CAPTCHA interface includes animations of the predetermined number of objects. A user authentication method using CAPTCHA. The method of claim 1, wherein generating the animation comprises:
generating the plurality of frames constituting an animation in which the object rotates at a constant speed; and
Deleting the object from a frame at which the object points in the correct direction, and generating a blinking animation when the object points in the correct answer direction;
User authentication method using CAPTCHA, including. The method of claim 1, wherein generating the animation comprises:
generating the plurality of frames constituting an animation in which the object rotates at a constant speed; and
generating an animation that temporarily stops when the object points in the correct answer direction by additionally inserting a frame when the object points in the correct answer direction;
User authentication method using CAPTCHA, including. The method of claim 1, wherein generating the animation comprises:
generating the plurality of frames constituting an animation in which the object rotates at a constant speed; and
Inserting an additional frame before or after the object points in the correct direction, thereby creating an animation that rotates at a slower speed than the constant speed when the object points in the correct answer direction;
User authentication method using CAPTCHA, including. The method of claim 1, wherein generating the animation comprises:
generating the plurality of frames constituting an animation in which the object rotates at a constant speed; and
Reversing the order of front and back frames in the animation when the object points in the correct direction, thereby creating a shaking animation when the object points in the correct direction;
User authentication method using CAPTCHA, including. The method of claim 1, wherein generating the animation comprises:
generating an animation including a first object rotating in the correct answer direction with a movement distinct from other directions, and a second object rotating at a different speed from the first object and overlapping the first object;
User authentication method using CAPTCHA, including. The method of claim 9, wherein the second object is different from the first object in at least one of hue, saturation, or transparency. The method of claim 9, wherein the second object has the same hue, saturation, and transparency as the first object. The user authentication method according to claim 1, wherein the step of receiving the direction input includes receiving a user's direction input through a direction key on a keyboard. According to paragraph 1,
The CAPTCHA interface includes a direction input interface for receiving direction input,
The step of receiving the direction input includes receiving an input from a user who clicks or touches a point indicating a direction through the direction input interface. In an electronic device for authenticating a user using CAPTCHA, the electronic device includes:
display;
user input unit;
memory to store instructions; and
At least one processor functionally connected 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 directions, generate an animation consisting of a plurality of frames of an object rotating with a movement distinct from other directions with respect to the correct answer direction,
Displaying a CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) interface, including an array of the generated animations corresponding to the correct answer pattern, through the display,
Receiving a direction input from the user input unit,
An electronic device configured to determine whether to authenticate a user based on a result of comparing the received direction input with the correct answer pattern. The electronic device of claim 14, wherein the direction of the at least one correct answer 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 to be a random direction. According to clause 14,
The correct answer pattern consists of a predetermined number of correct answer directions,
The CAPTCHA interface includes animations of the predetermined number of objects. 15. The method of claim 14, wherein the at least one processor:
Generating the plurality of frames constituting an animation in which the object rotates at a constant speed,
An electronic device configured to delete the object from a frame at which the object points in the correct answer direction and generate a blinking animation when the object points in the correct answer direction. 15. The method of claim 14, wherein the at least one processor:
Generating the plurality of frames constituting an animation in which the object rotates at a constant speed,
An electronic device configured to generate an animation that temporarily stops when the object points in the correct answer direction by additionally inserting a frame at the point when the object points in the correct answer direction. 15. The method of claim 14, wherein the at least one processor:
Generating the plurality of frames constituting an animation in which the object rotates at a constant speed,
An electronic device set to generate an animation that rotates at a slower speed than the constant speed when the object points in the correct answer direction by additionally inserting a frame before or after the point when the object points in the correct answer direction. 15. The method of claim 14, wherein the at least one processor:
Generating the plurality of frames constituting an animation in which the object rotates at a constant speed,
An electronic device that is set to reverse the order of front and back frames in the animation when the object points in the correct direction, thereby generating a shaking animation when the object points in the correct answer direction. 15. The method of claim 14, wherein the at least one processor:
Electronic, which is set to generate an animation including a first object rotating in the correct answer direction with a movement distinct from other directions, and a second object rotating at a different speed from the first object and overlapping the first object. Device. The electronic device of claim 22, wherein the second object is different from the first object in at least one of hue, saturation, or transparency. The electronic device of claim 22, wherein the second object has the same hue, saturation, and transparency as the first object. According to clause 14,
The user input unit includes a keyboard,
The at least one processor is configured to receive a user's direction input through direction keys of the keyboard. According to clause 14,
The CAPTCHA interface includes a directional pad interface for receiving directional input,
The at least one processor is configured to receive an input from a user who clicks or touches a point indicating a direction through the directional pad interface. In a user terminal for authenticating a user using CAPTCHA, the user terminal:
a communication unit that receives a user authentication request from the server;
display;
user input unit;
memory to store instructions; and
At least one processor functionally 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, determine a correct answer pattern consisting of at least one correct answer direction,
For each of the at least one correct answer directions, generate an animation of an object consisting of a plurality of frames rotating with a movement distinct from other directions with respect to the correct answer direction,
Displaying a CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) interface including an array of the generated animations corresponding to the correct answer pattern through the display,
Receiving a direction input from the user input unit,
Depending on the result of comparing the received direction input and the correct answer pattern, determine whether to authenticate the user,
A user terminal configured to control the communication unit and transmit whether the user is authenticated to the server. determining a correct answer pattern consisting of at least one correct answer direction;
For each of the at least one correct answer directions, generating an animation consisting of a plurality of frames of an object rotating with a movement distinct from other directions with respect to the correct answer direction;
displaying a CAPTCHA interface including an array of the generated animations corresponding to the correct answer pattern;
Receiving a direction input from a user; and
determining whether to authenticate a user according to a result of comparing the received direction input with the correct answer pattern;
A computer program stored on a medium to execute a user authentication method using CAPTCHA in combination with hardware, including. determining a correct answer pattern consisting of at least one correct answer direction;
For each of the at least one correct answer directions, generating an animation consisting of a plurality of frames of an object rotating with a movement distinct from other directions with respect to the correct answer direction;
displaying a CAPTCHA interface including an array of the generated animations corresponding to the correct answer pattern;
Receiving a direction input from a user; and
determining whether to authenticate a user according to a result of comparing the received direction input with the correct answer pattern;
A computer-readable recording medium containing a program that executes a user authentication method using CAPTCHA on a computer.

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