JP2012230508A - Portable terminal device and password management system thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal device and a password management system thereof capable of ensuring high security so that it is difficult for a third person to find a password, even when the third person sees input operation of the password on the portable terminal device while the input operation is performed.SOLUTION: The portable terminal device has a display unit and a key input unit capable of inputting characters on a main surface side, and a switch unit on a back surface side. The portable terminal device includes: an input information integration processing unit for combining back surface switch information associated with an ON state or OFF state of the switch unit when respective characters are input for the respective characters of a character string input by the key input unit, and generating password information; a password information registration unit for storing the password information generated by the input information integration processing unit as a registered password; and a password information authentication unit for checking the password information generated by the input information integration processing unit with the registered password.

Description

  The present invention relates to a mobile terminal device and a password management system thereof, and more particularly to a mobile terminal device capable of ensuring high security and a password management system thereof.

  2. Description of the Related Art Conventionally, in a mobile terminal device, a password composed of a character string such as a number or a Roman character has been input in order to authenticate an authorized user. However, the password may be known to the third party by the third party seeing the password input operation or the character string itself of the entered password. Also, passwords are often composed of four digits, and even if a third party does not know all the numbers, the password can be overlooked by guessing from the finger movement of the user during the input operation. There is also a risk of being taken away. If a password is easily seen by a third party, the mobile terminal device is used with the password, and there is a concern about leakage of personal information and unauthorized use such as access to a paid site.

  Therefore, various password input methods have been disclosed so that the password of the mobile terminal device cannot be easily guessed. For example, Patent Document 1 adds (or subtracts, multiplies, and divides) an Nth number from the right end and an Mth number from the left in a certain number sequence (for example, 21-digit randomly arranged numbers) when setting a password. The user sets the terminal to the terminal. At the time of password authentication, the terminal presents a numerical sequence composed of different random numbers each time, and the user inputs a number resulting from adding the Nth number and the Mth number based on the set contents. The terminal receives the input, and the input number is a preset operation that “adds (or subtracts, multiplies, divides) the Nth number and the Mth number from the left”. Authentication is performed based on whether or not the result calculated by the method corresponds. Since the number presented at the time of password authentication changes each time, even if the number is known to a third party, the number itself does not form a password, so it is intended to prevent leakage of the password.

JP 2006-185060 A

  However, in Patent Document 1, instead of remembering a predetermined character string (number sequence) as a password, “adding the Nth number and the Mth number from the left (or subtraction, multiplication, division) It is necessary to remember the abstract matter “to do”, which may be difficult for the user to remember. In the first place, there is a possibility that a third party may know the setting contents at the time of password setting operation.

  Therefore, the present invention relates to the password input in the mobile terminal device by inputting the password by operating the operation unit on the front of the mobile terminal device and the operation unit on the back at the same time. Even if a third party knows the operation content of the operation unit, it is not possible to know the operation content of the operation unit on the back at the same time, providing a portable terminal device and its password management system that can ensure high security The purpose is to do.

  In order to achieve the above goal, the mobile terminal device of the present invention is a mobile terminal device having a display unit and a key input unit capable of inputting characters on the main surface side, and a switch unit provided on the back side. In addition, for each character of the character string input by the key input unit, input information integration processing for generating password information by combining back switch information related to the ON or OFF state of the switch unit when each character is input Information, a password information registration unit for storing the password information generated by the input information integration processing unit as a registered password, and password information for verifying the password information generated by the input information integration processing unit with the registered password And an authentication unit.

  In addition, the switch unit of the portable terminal device of the present invention has a plurality of back switches, and the back switch information includes information on combinations of respective on or off states of the back switches.

  In addition, the plurality of back switches of the mobile terminal device of the present invention include a push button switch or a proximity switch in which a different identification unit is provided for each back switch.

  Further, the mobile terminal device of the present invention has a side switch on the side surface instead of or in addition to the switch unit, and the input information integration processing unit is configured to input each character of the character string input by the key input unit. The password information is generated by combining the side switch information related to the on or off state of the side switch when each character is input.

  The password management system of the present invention is a password management system for a portable terminal device having a display unit on the main surface side and a key input unit capable of inputting characters and a switch unit on the back side. The portable terminal device combines, for each character of the character string input by the key input unit, back switch information related to the ON or OFF state of the switch unit when each character is input, and provides password information. An input information integration processing unit to be generated; and a password information transmission unit that transmits the password information to an external computer on a communication network. The external computer receives the password information transmitted from the password information transmission unit. Password information receiving unit that receives the password information received by the password information receiving unit as a registered password. And having the word information registration unit, and a password information authentication unit to be matched with the Password information information receiving unit receives the registered password.

  Regarding the password input operation in the mobile terminal device, the password is input by operating the key input unit on the front of the mobile terminal device and the switch unit on the back at the same time. Even if the operation details are found by a third party, it is not possible to know the operation details of the switch part on the back at the same time. It is impossible to know the details of the operation of the input unit at the same time. Thus, at least the same person does not know the operation contents of both the front and back operation units at the same time, so that password leakage can be prevented and high security can be ensured.

  In addition, even if there is a person who knows the operation content of the front key input unit and a person who knows the operation content of the back switch unit, the operation content of the front key input unit is different. Those who have found it cannot know whether the operation of the front key input unit was performed in the operation state (ON / OFF) of the switch unit on the back side. Those who have found it are not possible to know whether the operation (on / off) of the switch on the back was performed in any operating state of the key input unit on the front. Can be prevented.

  Even if a simple numeric string (character string) such as a birthday is set as a password, the password is configured by the combination of the on / off state of the switch unit on the back of the mobile terminal device, so a third party can easily It is difficult to guess the password, and it is possible to prevent unauthorized use by knowing the password by a third party.

  In addition, by providing a switch unit on the back of the mobile terminal device, a plurality of combinations can be made for each character input at the front key input unit depending on the state of the switch unit on the back. In the case of using the rear switch, it is possible to configure passwords with a greater number of combinations, and it is difficult to guess the password easily, so that high security can be ensured.

  In addition, since a plurality of back switches are provided with a different identification unit for each back switch, it is easy for a user to view any switch on the back without looking at the back side while looking at the front of the mobile terminal device. It becomes possible to operate.

  In addition, instead of or in addition to a plurality of back switches, a side switch is provided, and a password is input by simultaneously operating the key input unit on the front of the mobile terminal device and the side switch unit. Therefore, security can be improved.

  The password management system of the present invention is particularly useful for password authentication when using or downloading application software stored in an external server, for example.

It is a figure which shows the external appearance of the portable terminal device which concerns on 1st Embodiment of this invention, (a) is a front view of a portable terminal device, (b) is a rear view of a portable terminal device. It is a figure which shows the switch part provided in the back surface of the portable terminal device of this invention, (a) is a figure which shows the Example which has arrange | positioned the cross-shaped back switch of 4 directions of the up-down and left-right formed integrally, b) is a diagram showing an embodiment in which four individual rear switches are arranged in four directions, up, down, left and right. It is a figure which shows the switch part provided in the back surface of the portable terminal device of this invention, (a) shows the Example arrange | positioned so that the long side of a rectangular-shaped back switch may become in parallel with the side surface of a portable terminal device. FIG. 4B is a diagram showing an embodiment in which the long side of the rectangular rear switch is arranged so as to be parallel to the bottom surface of the mobile terminal device. It is a block diagram which shows the circuit structure of the portable terminal device of this invention. It is a functional block diagram which shows the structure of the portable terminal device which concerns on 1st Embodiment of this invention. It is a flowchart which shows the setting process of the password in the portable terminal device of this invention. (A) is the panel display screen in the setting of the password of the portable terminal device of this invention, (b) is a figure which shows operation of the switch of the back surface of the portable terminal device in the setting of a password. It is a figure which shows the memory | storage pattern of the data of the password to the data storage memory of the portable terminal device of this invention. It is a flowchart which shows the authentication process of the password in a portable terminal device. It is a functional block diagram which shows the structure of the portable terminal device which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process which sets the password in a portable terminal device to an external computer system. It is a flowchart which shows the authentication process of the password of the portable terminal device by an external computer system.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a mobile terminal device and a password management system according to the invention will be described with reference to the drawings.

[First Embodiment]
1A and 1B are views showing the appearance of a mobile terminal device according to a first embodiment of the present invention. FIG. 1A is a front view of the mobile terminal device, and FIG. 1B is a back view of the mobile terminal device. Fig. 2 (a) is a diagram showing an embodiment in which cross-shaped rear switches in four directions, up, down, left and right, which are integrally formed, are arranged. Fig. 2 (b) is a diagram of four individual rear switches up and down. The figure which shows the Example arrange | positioned in four directions on either side, FIG. 3A is a figure which shows the Example arrange | positioned so that the long side of a rectangular-shaped back switch may become in parallel with the side surface of a portable terminal device, FIG. (B) is a figure which shows the Example which has arrange | positioned so that the long side of a rectangular-shaped back switch may become in parallel with the bottom face of a portable terminal device.

  As shown in FIG. 1A, a touch panel 4 provided on the main surface side of the housing 2 is disposed on the front surface 3 of the mobile terminal device 1. The touch panel 4 includes a display unit 5 and a key input unit 6, and the display unit 5 and the key input unit 6 are integrally configured. The display unit 5 can display characters, images, menus, and the like, and can input characters and select menus by operating the key input unit 6. The key input unit 6 can select a character, a menu, or the like displayed on the display unit 5 by touching it with a finger. In addition to the display unit 5, a key input unit 6 may be provided (for example, by a button type).

  As shown in FIG. 1B, a switch unit 8 is provided on the back surface 7 of the mobile terminal device 1. The switch unit 8 is provided with at least one or more back switches 9 (three in FIG. 1B). As an example, the back switch 9 is configured as a push button switch, and can be turned on / off. Further, a projection 9a is provided on the surface of the rear switch 9 as an identification portion that can identify which rear switch 9 is only with a fingertip. More specifically, it is preferable to change the number of projections 9a to be provided for each rear switch 9. In the example shown in FIG. 1B, the left rear switch 9 has one projection 9a and a central rear surface. In the example, the switch 9 is provided with two protrusions 9a, and the right rear switch 9 is provided with three protrusions 9a. Since the user holds with one hand so that the touch panel 4 on the front surface 3 of the mobile terminal device 1 is in front, the user cannot visually observe the back surface 7 of the mobile terminal device 1 in this state. For this reason, what is necessary is just to confirm the number of protrusion 9a provided in the surface of the back switch 9, and to push arbitrary back switches 9.

  In addition, although the switch part 8 shown in FIG.1 (b) has shown the example which provided the three back switches 9, and has arrange | positioned in the back upper part of the portable terminal device 1, this is a user's portable terminal device. 1 is held with one hand and the touch panel 4 is operated with a finger of the other hand, while supporting the side of the mobile terminal device 1 with the thumb and little finger of the hand holding the mobile terminal device 1 This is because it is easy to operate the three back switches 9 with the fingertips of the index finger, middle finger, and ring finger.

  As shown in FIG. 2A, the back switch 9 of the switch unit 8 provided on the back surface 7 of the mobile terminal device 1 may be formed in an integrally formed four-way cross shape in the vertical and horizontal directions. By using a cross shape, it is easy to press any direction among the four directions of up, down, left and right with the fingertip. Furthermore, as shown in FIG. 2B, instead of the integrated cross-shaped back switch 9, four individual back switches 9 may be arranged in four directions, up, down, left, and right. Further, as shown in FIGS. 2A and 2B, a side switch 10 is provided on the side surface of the casing 2 of the portable terminal device 1 instead of or in addition to the switch unit 8 (rear switch 9). You may enable it to operate with the thumb and little finger of the hand holding the terminal device 1.

  As shown in FIG. 3A, it is also possible to provide a rectangular rear switch 9 and arrange the long side thereof to be parallel to the side surface of the mobile terminal device 1. By providing contact points of the switches in the vicinity of both ends in the longitudinal direction of the rectangular back switch 9, the same operation as that provided by two individual back switches can be obtained. Further, as shown in FIG. 3B, the rectangular rear switch 9 may be arranged such that its long side is parallel to the bottom surface (or top surface) of the mobile terminal device 1.

  The back switch 9 provided on the back surface 7 of the portable terminal device can be variously shaped, numbered, and arranged, and is not limited to the above-described back switch. Moreover, although the back switch described the embodiment of the push button switch, for example, a proximity switch such as an optical switch or a capacitive switch may be used, and is not particularly limited.

  Next, a circuit configuration of the mobile terminal device will be described with reference to FIG. FIG. 4 is a block diagram illustrating a circuit configuration of the mobile terminal device. As shown in FIG. 4, the mobile terminal device 1 includes a CPU (Central Processing Unit) 15 that performs control, calculation, and the like, a memory 17 that stores a program, a data storage memory 18 that stores data such as a password, A touch panel 4 having a display unit 5 (shown in FIG. 1) for displaying characters, images, etc. and a key input unit 6 (shown in FIG. 1) for receiving inputs such as numbers, characters, menu selections, and the like is provided on the back surface 7. The switch unit 8 includes a back switch 9 and / or a side switch 10 provided on a side surface, and a communication unit 19 that performs communication with the outside. The memory 17, the data storage memory 18, the switch unit 8, the touch panel 4 and the communication unit 19 are connected to the CPU 15 via the bus line 20, and the CPU 15 executes a program stored in the memory 17, thereby Each part is controlled.

  The memory 17 illustrated in FIG. 4 includes a program for operating the mobile terminal device, a work area for operating the program, and an area for temporarily storing data. The data storage memory 18 stores various setting data including a password, and is composed of a nonvolatile rewritable memory. It should be noted that various setting data including a password may be stored in the memory 17 by providing an area for storing data in the memory 17 instead of the data storage memory 18. The touch panel 4 is configured to receive an operation by a user of the mobile terminal device 1 and to read an operation state by the CPU 15. In addition, the communication unit 19 is for the mobile terminal device 1 to communicate with other external mobile terminal devices, servers, computers, and the like via the communication network 55 (see FIG. 10).

  Next, password setting in the mobile terminal device will be described with reference to FIGS. FIG. 5 is a functional block diagram showing the configuration of the mobile terminal device according to the first embodiment of the present invention, FIG. 6 is a flowchart showing password setting processing in the mobile terminal device, and FIG. FIG. 7B is a diagram showing a panel display screen for setting the password of the portable terminal device, and FIG.

  As shown in FIG. 5, the mobile terminal device 1 includes a touch panel 4 disposed on the front surface 7, a switch unit 8 disposed on the back surface 7, a key input receiving unit 25, a key input information storage unit 27, and a rear switch input. Unit 26, rear switch input information storage unit 30, input information integration processing unit 31, password information registration unit 33, and password information authentication unit 34.

  The key input receiving unit 25 detects that the key input unit 6 displayed on the display unit of the touch panel 4 has been touched, and reads characters such as numbers assigned to the touched key input unit 6. The key input information storage unit 27 converts the character read by the key input reception unit 25 into data and temporarily stores it. The back switch input unit 26 detects on / off of the back switch 9 in the switch unit 8 in synchronization with the key input receiving unit 25, and reads the back switch 9 in the on state. The rear switch input information storage unit 30 temporarily stores information on the rear switch 9 in the ON state read by the rear switch input unit 26. The input information integration processing unit 31 combines, for each character of the character string input by the key input unit 6, back switch information regarding the on / off state of the switch unit 8 when each character is input, Generate. That is, the character data temporarily stored in the key input information storage unit 27 and the switch information temporarily stored in the rear switch input information storage unit 30 are combined to form one digit of the password, and the predetermined number of digits is obtained. Repeat until the password is generated. The password information registration unit 33 stores the password information generated by the input information integration processing unit 31 as a registered password. The password information authentication unit 34 compares the password information generated by the input information integration processing unit 31 with the registered password.

  When setting the password, the password information generated by the input information integration processing unit 31 is sent to the password information registration unit 33 and stored in the data storage memory 18 as a password. At the time of password authentication, the password information generated by the input information integration processing unit 31 is sent to the password information authentication unit 34, and the password information authentication unit 34 stores the registered password stored in the password information registration unit 33. And the password information input from the input information integration processing unit 31 are collated.

  The key input receiving unit 25, the back switch input unit 26, the key input information storage unit 27, the back switch input information storage unit 30, the input information integration processing unit 31, the password information registration unit 33, and the password information authentication unit 34 described above. These functions are realized by the CPU 15 executing a program stored in the memory 17.

  Next, password setting processing in the mobile terminal device 1 will be described with reference to FIGS. 6 and 7. As shown in FIG. 6, first, an operation menu is displayed on the display unit 5 of the touch panel 4 and the displayed password setting menu is selected (step S1). After selecting the password setting menu, as shown in FIG. 7A, a key arrangement for password is displayed as the key input unit 6 on the display unit 5 of the touch panel 4. In the following, a case where the password is configured by a combination of numbers will be described as an example, and the key arrangement will be described as a numerical button (ten-key) arrangement. Note that the password used in the mobile terminal device 1 is not limited to a number, and is not particularly limited as long as it includes a symbol and is a character.

  The user sets a desired number of digits of the password to be set (step S2). For example, when the password is set by a combination of four numbers (that is, a four-digit number), “4” is touched and input from the numbers on the numeric keypad displayed on the display unit 5. Further, based on the number of digits of the password, a password acceptance column 12 for displaying acceptance of the password is displayed on the display unit 5 of the touch panel 4. The number of digits of the input password is temporarily stored in the memory 17.

  Next, the user presses the back switch 9 (see FIG. 7B) arbitrarily selected for setting as a password while pressing or not pressing the numeric keypad displayed on the key input unit 6 of the display unit 5. An arbitrary number is selected from the numbers, and the number is touched and input. The key input receiving unit 25 repeatedly monitors whether or not a predetermined number has been input by touching the number on the touch panel 4 (No in step S3), and when detecting that the predetermined number has been input (step S3). (Yes in S3), the key input information storage unit 27 outputs the number input by touching the touch panel 4 (step S4). The back switch input unit 26 reads the on / off state of the back switch 9 in the switch unit 8 (step S5), and outputs the on / off information (data) of the back switch 9 to the back switch input information storage unit 30. Then, the back switch input information storage unit 30 stores the information (data) of the back switch 9 in the memory 17 (step S6).

  The information of the back switch 9 is written in the memory area allocated for the switch unit 8 by associating the back switch 9 with each bit of the memory and writing 1 to the corresponding bit of the memory. Then, the non-pressed rear switch 9 is made to write 0 to the corresponding bit of the memory. As an example, the data of the memory switch unit 8 is composed of 8 bits, and the rear switch 9A is assigned to bit 0, the rear switch 9B is assigned to bit 1, and the rear switch 9C is assigned to bit 2. Thereby, for example, when the back switch 9B is pressed, data of 02 in hexadecimal is stored in the memory 17. When all the rear switches are not pressed, 00 data in hexadecimal is stored in the memory 17. Further, when two or more back switches 9 are provided on the back surface 7 of the mobile terminal device 1 (see FIG. 7B and FIG. 2B), two or more of the back switches 9 are simultaneously pressed. You may do it.

  As shown in FIG. 7 (a), it is preferable to notify the user that a number for each digit has been received in the password reception column 12 of the display unit 5, but at this time, the set number is displayed. Displaying a symbol for concealment (for example, “*” (asterisk)) is more preferable because security is improved.

  Next, the input information integration processing unit 31 determines whether or not the number of digits of the input password information (numbers and the on / off state of the back switch) has reached the number of password digits input in step S2 ( In step S7), when the number of digits has not been reached (No in step S7), the process proceeds to step S3. On the other hand, when the number of digits of the input password information reaches the set number of password digits (Yes in step S7), the input information integration processing unit 31 integrates the numbers and the on / off information of the rear switch to obtain the password ( The registered password is stored in the data storage memory 18 (step S8). The number of digits of the password is also stored.

  As described above, the password (registered password) is stored and registered in the data storage memory 18 of the mobile terminal device 1.

  FIG. 8 is a diagram illustrating a password storage form in the data storage memory 18 of the mobile terminal device 1. As shown in FIG. 8, the password is composed of a number input by the key input unit 6 on the front surface 3 for each digit and on / off information of the rear switch 9 on the rear surface 7. The number of digits N of the password is also stored. FIG. 8 shows an N-digit password.

  Although the conventional password uses only the numbers input at the key input unit, the password of the mobile terminal device 1 of the present invention is the number input at the key input unit 6 and the on / off information of the rear switch 9. It becomes the composition which combined.

  For example, when the back switch 9 of the mobile terminal device 1 is configured by the three back switches 9 shown in FIG. 1B, eight types of combinations are possible for each one-digit number input from the touch panel 4. In addition, when the back switch 9 of the mobile terminal device 1 is configured by a cross-shaped switch shown in FIG. 2A, five types of combinations (ON: up, down, left, right, Off). For this reason, even for a password with a small number of digits, high security can be ensured by configuring the back switch on / off as a password.

  Next, authentication processing using a password stored in the data storage memory 18 of the mobile terminal device 1 will be described with reference to FIG. FIG. 9 is a flowchart showing password authentication processing in the mobile terminal device.

  First, a password authentication menu is displayed on the display unit 5 of the touch panel 4 of the mobile terminal device 1 (step S20). At this time, the digit number information of the password to be authenticated is read from the data storage memory 18. For example, a password authentication menu is displayed when the mobile terminal device 1 is started or before an application or the like for which a password is set is executed. The user selects the back switch 9 set as the password and selects the set password number while pressing or not pressing the back switch 9 and touches and inputs the number on the touch panel 4. The key input receiving unit 25 repeatedly monitors whether or not a password number is touch-inputted on the touch panel 4 (No in step S21), and when detecting that a predetermined number is input (in step S21). Yes), it is output to the key input information storage unit 27, and the key input information storage unit 27 stores the touch-input number from the key input reception unit 25 (step S22).

  Further, the back switch input unit 26 reads the on / off state of the back switch 9 in the switch unit 8 (step S23), and outputs the on / off information (data) of the back switch 9 to the back switch input information storage unit 30. Then, the back switch input information storage unit 30 stores information (data) of the back switch 9 in the memory 17 (step S24). In the memory area allocated for the switch unit 8, 1 is written to the corresponding bit of the memory when the rear switch 9 is pressed, and 0 is written to the corresponding bit of the memory when the rear switch 9 is not pressed. In addition, it is preferable to notify the user that a number for each digit has been received on the display unit 5, but at this time, if a symbol (for example, “*” (asterisk)) for hiding the set number is displayed. It is more preferable because security is improved.

  Next, it is determined whether or not the number of digits of the input password information (number and on / off state of the rear switch) has reached the number of digits of the registered password (step S25). If not reached (No in step S25), the process proceeds to step S21.

  On the other hand, when the number of digits of the input password information reaches the number of digits of the registered password (Yes in step S25), the input information integration processing unit 31 temporarily uses the numbers and the on / off information of the rear switch as password information. Then, it is stored in the memory 17 (step S26).

  Next, the password information authentication unit 34 reads the registered password from the data storage memory 18 (step S27). At this time, as shown in FIG. 8, a registered password composed of numbers and data of the back switch 9 is read out. The entered password information (number and on / off information of the back switch 9) is compared with the registered password (step S28). If the input password information matches the registered password (Yes in step S29), the password is authenticated as correct (step S30).

  On the other hand, if the collation between the entered password information and the registered password does not match (No in step S29), the password authentication result is an error (step S31), and an error message is displayed on the display unit 5 of the touch panel 4. In step S32, a message such as re-input of the password is displayed. As described above, the authentication using the password stored in the data storage memory of the mobile terminal device is executed.

  In this way, the password is input by operating not only the operation unit (touch panel) on the front of the mobile terminal device but also the operation unit (rear switch) provided on the back of the mobile terminal device. By doing so, even if a third party can look into the operation content on the front side of the mobile terminal device while entering the password, the operation content on the back side of the mobile terminal device is not seen at the same time. Therefore, it is possible to effectively prevent password leakage.

  Even if a simple numeric string such as a birthday is set as the password, the password is configured by the combination of the on / off state of the back switch of the mobile terminal device, so a third party can easily guess the password. It is difficult to do this, and it is possible to prevent unauthorized use by knowing the password by a third party.

  In addition, by providing a switch on the back of the mobile terminal device, it is possible to make multiple combinations for a single character input using the input means on the front, depending on the on / off state of the switch on the back. Since it is difficult to do so, high security can be ensured.

[Second Embodiment]
Next, the mobile terminal device according to the second embodiment, in which the password of the mobile terminal device is accessed by an external computer system (for example, a server, a computer, etc.) and the password of the mobile terminal device is managed by the external computer system. The password management system is described. FIG. 10 is a functional block diagram showing the configuration of the mobile terminal device according to the second embodiment of the present invention, and FIG. 11 is a flowchart showing password setting processing in the mobile terminal device. 5 that are the same as those in FIG. 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 10, the mobile terminal device 1 includes a touch panel 4 disposed on the front surface, a switch unit 8 disposed on the back surface, a key input receiving unit 25, a key input information storage unit 27, and a rear switch input unit 26. And a back switch input information storage unit 30 and an input information integration processing unit 31. These configurations are the same as those of the mobile terminal device 1 in the first embodiment. The mobile terminal device 1 in the present embodiment further includes a password information transmission unit 39, but does not require a configuration corresponding to the password information authentication unit 34 and the password information registration unit 33 of the mobile terminal device 1 in the first embodiment. This is different from the mobile terminal device 1 in the first embodiment.

  The password information generated by the input information integration processing unit 31 is output to the password information transmission unit 39. The password information transmission unit 39 transmits the password information to an external computer system (for example, the computer 45) via the communication network 55. To do. The communication network 55 is, for example, a LAN (Local Area Network), a WAN (Wide Area Network), or the like, and may be anything that functions as a communication network regardless of a wired type or a wireless type.

  On the other hand, the external computer 45 includes a password information receiving unit 47 that can receive password information transmitted from the password information transmitting unit 39 of the mobile terminal device 1. The password information received by the password information receiving unit 47 is sent to the password information registration unit 48 and stored in the memory as a registered password when setting the password. Further, when authenticating the password, the password is sent to the password information authenticating unit 49, and the registered password stored in the password information registering unit 48 matches the input password information by the password information authenticating unit 49. Is authenticated.

  The functions of the key input receiving unit 25, the back switch input unit 26, the key input information storage unit 27, the back switch input information storage unit 30, the input information integration processing unit 31, and the password information transmission unit 39 described above are as follows. The CPU 15 is realized by executing a program on the memory 17. The functions of the password information receiving unit 47, the password information registration unit 48, and the password information authentication unit 49 in the computer 45 are realized by the CPU of the computer 45 executing the program on the memory of the computer. ing.

  Next, processing for setting a password in the mobile terminal device in an external computer system will be described with reference to FIG. First, an operation menu is displayed on the display unit 5 of the touch panel 4 and a displayed password setting menu is selected (step S40). After selecting the password setting menu, a key arrangement for password is displayed on the display unit 5 of the touch panel 4 (see FIG. 7A). Also in the present embodiment, a case in which a combination of numbers is formed as an example of a password will be described, and the key layout will be described as a numerical button (tenkey). However, the password used in the mobile terminal device 1 is not limited to numbers but is a symbol. Needless to say, it is not particularly limited as long as it is a character.

  The user sets a desired number of digits of the password to be set (step S41). Next, the user can select any number from the numeric keypad displayed on the display unit 5 while pressing or not pressing the rear switch 9 (see FIG. 7B) arbitrarily selected for setting as a password. Select a number and touch the number on the touch panel 4 to input. The key input receiving unit 25 repeatedly monitors whether or not a predetermined number has been input by touching the number on the touch panel 4 (No in step S42), and when detecting that the predetermined number has been input (step S42). (Yes in S42), the key input information storage unit 27 outputs the number input by touching the touch panel 4 (step S43).

  Further, the back switch input unit 26 reads the on / off state of the back switch 9 (step S44), and outputs the on / off information (data) of the back switch 9 to the back switch input information storage unit 30. The input information storage unit 30 stores information (data) of the rear switch 9 in the memory 17 (step S45).

  Next, the input information integration processing unit 31 determines whether or not the number of digits of the input password information (numbers and the on / off state of the rear switch) has reached the number of password digits input in step S41 ( In step S46), when the number of digits has not been reached (No in step S46), the process proceeds to step S42. On the other hand, when the number of digits of the input password information reaches the set number of password digits (Yes in step S46), the input information integration processing unit 31 integrates the numbers and the on / off information of the rear switch, As a password, it outputs to the external computer 45 via the communication network 55 from the password information transmission part 39 (step S47). Also, the number of digits of the password is transmitted to the computer 45 at the same time.

  On the other hand, the computer 45 receives information (numbers and on / off information of the rear switch) input by the mobile terminal device 1 via the communication network 55 (step S48). The computer 45 stores the received number and back switch on / off information in the computer data storage memory as the password of the portable terminal device 1 (step S49). The number of digits of the received password is also stored in the computer data storage memory. The form stored in the computer data storage memory of the computer 45 is the same as that shown in FIG. As described above, the password in the portable terminal device is set in an external computer system such as a computer.

  Next, password authentication performed by accessing an external computer system from a mobile terminal device will be described with reference to FIG. FIG. 12 is a flowchart showing password authentication processing of the mobile terminal device by an external computer system.

  First, a password authentication menu is displayed on the display unit 5 of the touch panel 4 of the mobile terminal device 1 (step S60). The user selects the number of the set password while pressing or not pressing the selected back switch 9 by selecting the back switch 9 set as the password, and touches and inputs the number on the touch panel 4. The key input receiving unit 25 repeatedly monitors whether or not a password number has been touch-inputted on the touch panel 4 (No in step S61), and when detecting that a predetermined number has been input (in step S61). Yes), it is output to the key input information storage unit 27, and the key input information storage unit 27 stores the touch-input number from the key input reception unit 25 (step S62).

  Further, the back switch input unit 26 reads the on / off state of the back switch 9 in the switch unit 8 (step S63), and outputs the on / off information (data) of the back switch 9 to the back switch input information storage unit 30. Then, the back switch input information storage unit 30 stores the information (data) of the back switch 9 in the memory 17 (step S64).

  Next, it is determined whether or not the number of digits of the entered password information (numbers and the on / off state of the back switch) has reached the number of digits of the registered password (step S65), and the number of digits has been reached. If not (No in step S65), the process proceeds to step S61. On the other hand, when the number of digits of the entered password information reaches the number of digits of the registered password (Yes in step S65), the user performs an operation for completing password entry. The input information integration processing unit 31 temporarily stores the numbers and back switch on / off information in the memory 17 as password information (step S66).

  Next, the mobile terminal device 1 outputs numbers and back switch on / off information to the external computer 45 via the communication network 55 (step S67). The computer 45 receives a number and back switch on / off information (password information) from the portable terminal device 1 by communication (step S68). The computer 45 reads the registered password from the computer data storage memory (step S69). The computer 45 collates the received number and back switch on / off information (password information) with the registered password (step S70). When the collation result between the input password information and the registered password matches (Yes in step S71), the password of the mobile terminal device 1 is authenticated as correct (step S72).

  On the other hand, if the input password information and the registered password do not match (No in step S71), the password authentication result of the mobile terminal device 1 becomes an error (step S73). The computer 45 transmits the authentication result to the mobile terminal device 1 via the communication network 55 (step S74). The mobile terminal device 1 receives the authentication result from the computer 45 (step S75), and displays the authentication result on the display unit 5 of the touch panel 4. When the authentication result is NG, a message such as password re-input is displayed. As described above, the password of the portable terminal device is authenticated by the external computer system.

  The password management system according to the second embodiment is particularly useful for password authentication when using or downloading application software stored in an external server, for example.

  The present invention can be applied not only to a portable terminal device but also to a device for inputting a password.

  The present invention can be embodied in many forms without departing from its essential characteristics. Therefore, it is needless to say that the above-described embodiment is exclusively for description and does not limit the present invention.

DESCRIPTION OF SYMBOLS 1 Portable terminal device 2 Case 3 Front 4 Touch panel 5 Display unit 6 Key input unit 7 Back surface 8 Switch unit
9, 9A, 9B, 9C Rear switch 9a Protrusion (identification part)
10 Side switch 12 Password acceptance field 15 CPU
17 Memory 18 Data Storage Memory 19 Communication Unit 20 Bus Line 25 Key Input Accepting Unit 26 Rear Switch Input Unit 27 Key Input Information Storage Unit 30 Rear Switch Input Information Storage Unit 31 Input Information Integration Processing Unit 33 Password Information Registration Unit 34 Password Information Authentication unit 39 Password information transmission unit 45 Computer 47 Password information reception unit 48 Password information registration unit 49 Password information authentication unit 50 Data storage memory for computer 55 Communication network

Claims (5)

A portable terminal device having a display unit on the main surface side and a key input unit capable of inputting characters, and a switch unit provided on the back side,
For each character of the character string input by the key input unit, an input information integration processing unit for generating password information by combining back switch information related to the ON or OFF state of the switch unit when each character is input ,
A password information registration unit for storing the password information generated by the input information integration processing unit as a registered password;
A password information authentication unit for verifying the password information generated by the input information integration processing unit with the registered password;
A portable terminal device comprising:   The portable terminal device according to claim 1, wherein the switch unit includes a plurality of back switches, and the back switch information includes information related to a combination of on and off states of the back switches.   3. The portable terminal device according to claim 2, wherein the plurality of back switches include a push button type switch or a proximity switch provided with a different identification unit for each back switch.   The portable terminal device has a side switch on the side surface instead of or in addition to the switch unit, and the input information integration processing unit is provided for each character of the character string input by the key input unit. The portable terminal device according to claim 1, wherein password information is generated by combining side switch information related to an on or off state of the side switch when a character is input. A password management system for a portable terminal device having a display unit on the main surface side and a key input unit capable of inputting characters, and a switch unit provided on the back side,
The portable terminal device generates password information for each character of the character string input by the key input unit by combining back switch information regarding the on / off state of the switch unit when each character is input. An input information integration processing unit;
A password information transmission unit for transmitting the password information to an external computer on a communication network,
The external computer receives a password information transmitted from the password information transmitter, and a password information receiver.
A password information registration unit for storing the password information received by the password information reception unit as a registered password;
A password management system comprising: a password information authenticating unit that collates password information received by the password information receiving unit with the registered password.

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