JP2011091613A - Mobile terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal device that releases a lock with high security without reducing user-friendliness. <P>SOLUTION: A mobile terminal device has: first and second individual authentication means each having a function of determining an authentication success for releasing a lock of the mobile terminal device; a selection means selecting one of the two or more authentication conditions, such as a first authentication condition which is satisfied when authentication is successful by either the first or second individual authentication means, a second authentication condition which is satisfied when authentication is successful by both of the first and second individual authentication means, and a third authentication condition which is satisfied when authentication is successful by one of the selected first or second individual authentication means; and a lock release means releasing a lock of the mobile terminal device when the authentication condition selected by the selection means is satisfied. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mobile terminal device, and more particularly to a mobile terminal device having a personal authentication function for enabling a function of the mobile terminal device.

  A large amount of personal information of users is stored in mobile terminal devices such as mobile phones. For this reason, there is an increasing need to conceal personal information stored in the mobile terminal device from a third party to protect personal privacy and security. With regard to privacy and security protection, a lock function for locking the operation of the mobile terminal device is provided.

  In order to release the lock function, personal authentication of the user is indispensable. As personal authentication methods, there are known personal identification number authentication for inputting a personal identification number, face authentication using a built-in camera, fingerprint authentication using a fingertip fingerprint, and the like. However, in these unlocking methods, for example, the password input is a method of using a four-digit numerical value. Depending on the person, the key operation input is troublesome, and is easily guessed by a third party. There is a problem. Further, in fingerprint authentication, it is necessary to lay out the authentication device on the housing, and there is a problem that the key arrangement is affected.

  For example, Patent Document 1 and Patent Document 2 describe motion authentication using an acceleration sensor of a mobile terminal device as a technique for personal authentication with high security. In this motion authentication, the casing of the mobile terminal device is moved by hand, and the motion pattern at that time is compared with a reference motion pattern registered in advance. As a result of the comparison, if the two movement patterns match, it is determined that the personal authentication has succeeded and the operation of the mobile terminal device is permitted. Further, these patent documents describe that, in addition to motion authentication, PIN number authentication and biometric authentication such as fingerprints are simultaneously performed.

JP 2002-207703 A JP 2007-116318 A

  In conventional authentication methods, motion authentication and face authentication are extremely excellent authentication methods in terms of security protection. However, these authentication methods may or may not be authenticated depending on the surrounding environment. In such a case, the user cannot use the mobile terminal device, and implementation of personal authentication impairs the convenience of the user of the mobile terminal. However, the patent document does not describe an authentication method for dealing with such a case.

  In view of the above, an object of the present invention is to provide a mobile terminal device that can be unlocked by performing personal authentication with high security without impairing the convenience of the user.

  In order to achieve the above object, the present invention provides a first personal authentication unit and a second personal authentication unit each having a function of determining a successful authentication for unlocking a mobile terminal device, A first authentication condition on the condition of successful authentication by one of the first personal authentication means and the second personal authentication means, a second authentication condition on the condition of successful authentication by both, and the first One authentication condition is selected from two or more authentication conditions out of the third authentication conditions that select either the personal authentication means or the second personal authentication means, and the authentication is successful by the selected personal authentication means. Provided is a portable terminal device comprising: an authentication condition selecting unit to be selected; and an unlocking unit that unlocks the portable terminal device when the authentication condition selected by the authentication condition selecting unit is satisfied.

  In the mobile terminal device of the present invention, the unlocking of the mobile terminal device is performed with high security without impairing the convenience of the user.

The block diagram of the portable terminal device which concerns on one Embodiment of this invention. The figure which shows the specific example of authentication information. The flowchart which shows the process of lock release. The flowchart which shows the process of authentication condition selection.

  Prior to the description of the embodiments of the present invention, an outline of the present invention will be described. The mobile terminal device of the present invention has, as its minimum configuration, a first personal authentication unit and a second personal authentication unit each having a function of determining success of authentication for unlocking the mobile terminal device, A first authentication condition that is conditional on successful authentication by one of the first personal authentication means and the second personal authentication means; a second authentication condition that is conditional on successful authentication by both; and the first One of the two or more authentication conditions is selected from among the third authentication conditions that select either one of the personal authentication means or the second personal authentication means, and the authentication success by the selected personal authentication means is a condition. Selecting means for selecting and unlocking means for releasing the lock of the mobile terminal device when the authentication condition selected by the authentication condition selecting means is satisfied.

  In the above mobile terminal device, personal authentication means and authentication conditions can be selected according to the surrounding environment, the degree of security, and the desire of the user, and an individual with high user convenience while maintaining high security. Authentication becomes possible.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of a mobile terminal device according to an embodiment of the present invention. The mobile terminal device 10 includes a clock unit 11, a display unit 12, a speaker unit 13, a microphone unit 14, an operation unit 15, a control unit 16, a motion sensor unit 17, a storage unit 18, and a program unit 19. And a radio unit 20.

  The clock unit 11, the display unit 12, the speaker unit 13, the microphone unit 14, and the wireless unit 20 each have a function that a conventional portable terminal device has. The operation unit 15 includes a keyboard and side keys. The motion sensor unit 17 includes an acceleration sensor.

  The program unit 19 includes an authentication condition setting function 22, an unlock function 23, a first personal authentication function 24, and a second personal authentication function 25. Authentication information 21 is stored in the storage unit 18. The authentication condition setting function 22 sets authentication information 21 according to an input from the operation unit 15 and an input from the motion sensor unit, and selects and sets an authentication condition for operating the mobile terminal, according to an operation by the user. . The lock release function 23 performs setting of the lock state of the mobile phone and unlocking according to the authentication information 21. While the mobile phone is set to the locked state, the user can perform only special processing such as emergency calling in addition to the unlocking processing.

  The first personal authentication function 24 generates a motion pattern from the motion signal output by the motion sensor unit 17, compares the generated motion pattern with the reference motion pattern stored in the authentication information 21, and compares the generated motion pattern. As a result, if they match, it has a function of determining that authentication is successful. The second personal authentication function 25 has a function of comparing the personal identification number input from the operation unit 15 with the personal identification number stored in the authentication information 21 and determining that the authentication is successful if they match as a result of the comparison. The control unit 16 operates according to these programs.

  FIG. 2 shows the configuration of the authentication information 21. The authentication information 21 includes a password authentication 31 indicating whether or not to perform authentication based on a password, motion authentication 32 indicating whether or not to perform authentication based on motion authentication, a password 33, motion authentication information 34, and setting. And a password number 35 for validating the selection. In the password authentication 31, “ON” is set by the authentication condition setting function 22, for example, when password authentication is performed, and “OFF” is set when password authentication is not performed. The personal identification number 33 is a character string for performing personal identification number authentication, and is arbitrarily set by the user from the operation unit 15 by the authentication condition setting function 22. In the motion authentication 32, for example, “ON” is set when the motion authentication is performed, and “OFF” is set when the motion authentication is not performed. The motion authentication information 34 is digital data for performing motion authentication, and the operation (for example, swinging up and down, turning) the user arbitrarily moves the mobile phone from the motion sensor unit 17 by the authentication condition setting function 22 is a numerical value. Is set. The personal identification number 35 is a personal identification number to be compared with the personal identification number input by the user when changing the setting.

  Next, processing of the mobile terminal device (hereinafter referred to as a mobile phone) 10 of the above embodiment will be described with reference to the flowchart of FIG. The mobile phone 10 is automatically locked when the operation is finished and the mobile phone 10 enters a standby state. On the other hand, when the lock state is released, the lock release function 23 performs an authentication process, and the lock is released when the authentication is successful.

  It is assumed that the mobile phone 10 is set to the locked state first. In the locked state, either the password authentication 31 or the motion authentication 32, or both are set to ON. First, the lock release function 23 determines whether or not there is a lock release instruction (S101). For example, it is assumed that there is an instruction to release the locked state when some operation is performed on the mobile phone 10 and the standby state is released. If there is no lock release instruction (No in S101), the lock release function 23 stands by in the locked state. The cancellation instruction is performed, for example, by key operation of the operation unit.

  When there is an instruction to release the lock state (S101 is present), the lock release function 23 acquires the setting information of the password authentication 31 and the motion authentication 32 from the authentication information 21 of the storage unit 18, and any personal authentication is performed. It is determined whether or not to perform (S102).

  When only motion authentication is set in S102 (the password authentication 31 is OFF and the motion authentication is ON), the lock release function 23 displays on the display unit 12, for example, “move the mobile phone”. The authentication screen is displayed (S111). Next, the lock release function 23 activates the motion sensor unit 17 including an acceleration sensor and starts motion input (S112). The lock release function 23 determines whether or not an authentication input end operation (for example, a determination key input operation on the operation unit 15) has been performed. If the operation has not ended, the motion input is continued (S113).

  When the authentication input is completed (end of S113), the motion sensor unit 17 is stopped (S114). The lock release function 23 compares the digitized motion information input by the motion sensor unit 17 with the reference motion authentication information 34 stored in the authentication information 21 to determine whether the motion pattern is the same. It is determined whether or not (S115). Next, the lock release function 23 determines whether or not the motion authentication is successful (S116). If the motion authentication is successful (OK in S116), the lock release function indicates that the authentication has been successful, and for example, “unlocked” is displayed on the display unit 12, and the mobile phone is unlocked (S117). ). If the movement authentication fails (NG in S116), it is assumed that the unlocking function has failed in the authentication, for example, the display unit 12 displays “Unlockable” and locks the mobile phone without unlocking it. The state is continued (S118).

  When both the motion authentication and the password authentication are set (the password authentication 31 is ON and the motion authentication is also ON), the lock release function 23 displays, for example, “Move the mobile phone or input the password” on the display unit 12. Please display "or other authentication screen (S121). Next, the unlocking function 23 activates the motion sensor unit 17 and starts motion input (S122). Further, the lock release function 23 starts to enter a password (S123). The lock release function 23 determines whether or not an authentication input end operation (for example, a determination key input operation at the operation unit 15) has been performed. If not, the movement input and the password input are continued (S124). .

  When the authentication input is completed (end of S124), the motion sensor unit 17 is stopped (S125), and the password input is ended (S126). The lock release function 23 determines whether the movement patterns are the same by comparing the digitized movement information input by the movement sensor unit 17 with the movement authentication information 34 of the authentication information 21. The lock release function 23 also determines whether or not they are the same number by comparing the input password number with the password number 33 of the authentication information 21 (S127).

  Next, the lock release function 23 determines that the authentication is successful if either or both of the motion authentication and the password authentication is successful (match), and either the motion authentication or the password authentication is not authenticated. If successful (mismatch), it is determined that the authentication is unsuccessful (S128). When the authentication is successful (OK in S128), the lock release function 23 assumes that the authentication is successful, for example, displays “lock released” on the display unit 12, and releases the lock of the mobile phone 10. (S129). If the authentication fails (NG in S128), the lock release function 23 assumes that the authentication has failed, for example, displays “cannot be unlocked” on the display unit 12, and locks the mobile phone without unlocking it. The state is continued (S130).

  When only password authentication is set (password authentication 31 is ON and motion authentication is OFF), the lock release function 23 displays an authentication message such as “Please enter password” on the display unit 12. A screen is displayed (S131). Next, the lock release function 23 starts to enter a password (S132). The lock release function 23 determines whether or not an authentication input end operation (for example, a determination key input operation at the operation unit 15) has been performed. If the operation has not ended, the password input is continued (S133). When the authentication input is completed (end of S133), the password input is ended (S134).

  Next, the lock release function 23 determines whether or not they are the same number by comparing the input personal identification number with the personal identification number 33 of the authentication information 21 (S135). Next, the lock release function 23 determines whether or not the password authentication is successful (S136). If the password authentication is successful (OK in S136), it is assumed that the lock release function has been successfully authenticated. For example, “lock is released” is displayed on the display unit 12 and the mobile phone is unlocked ( S137). When the password unlocking function 23 fails in the password authentication (NG in S136), the unlocking function is assumed to have failed in the authentication. For example, “unlockable” is displayed on the display unit 12, and the mobile phone is locked. The lock state is continued without releasing (S138).

  FIG. 4 is a flowchart showing authentication condition selection processing in the mobile phone 10. The user of the mobile phone 10 first designates that the setting condition is to be changed using a predetermined key (S201). The authentication condition setting function 22 displays an authentication setting screen on the display unit 12 of the mobile phone 10 (S202). On the setting screen, the user selects any one of password authentication and motion authentication, password authentication, or motion authentication. Simultaneously with the selection or prior to the selection, another password is entered. The authentication condition setting function 22 compares another input password number with the password number 35 stored in the authentication information, and accepts the selection if they match. The authentication condition setting function 22 performs settings according to the selected password authentication and motion authentication (A), password authentication (B), or motion authentication (C), respectively (S204, S205, S206). Thereafter, the authentication condition setting function 22 waits for the user to finish the operation of the mobile phone 10 (S207).

  When the user finishes the operation of the mobile phone 10, the authentication condition setting function 22 forcibly sets the authentication method to be selected to motion authentication selection when a certain time, for example, about 1 to 3 hours elapses (S208). Change is made (S209), and the setting condition changing process is terminated. This change in the setting conditions takes into account that motion authentication is more secure than password authentication. In the above-described embodiment, the authentication condition in which the authentication of either one of the password authentication and the motion authentication is successful and the completion of the entire personal authentication is given, but instead of or in addition to this, more A condition for completing personal authentication upon successful authentication of both sides, which is a high security setting, may be set. The setting change in S209 can be omitted depending on the desire of the user.

  In motion authentication, a signal pattern of a motion sensor built in the mobile phone is compared with a preset signal pattern of a motion sensor, and it is determined whether or not the authentication is successful based on the comparison result. For this reason, if this authentication success is a condition for unlocking, the lock can only be unlocked by an operation that only the owner can know. Personal authentication is possible. Unlike user authentication using face authentication, authentication can be performed even in a dark place.

  In the above embodiment, when a predetermined time elapses after the user ends the process on the mobile phone, the authentication condition setting function forcibly changes the setting to motion authentication. In motion authentication, it is difficult for others to determine the difference in motion, and it is difficult for a third party to easily bypass the authentication. For this reason, even if the mobile phone is dropped, a third party cannot easily access the mobile phone. Note that motion authentication may be difficult to execute depending on the surrounding environment. In this case, the user can easily cope with the problem by changing the setting by himself / herself, selecting personal identification number authentication, and performing personal authentication. In particular, the security code is further improved because the password authentication is performed when the setting is changed.

  In the above embodiment, the first personal authentication means is motion authentication and the second and third personal authentication means are cryptographic authentication. However, the first to third authentication means can be arbitrarily set, respectively. . In this case, the first to third personal authentication means may all be the same authentication method and only the data to be collated may be different, or the first to third personal authentication means may be all different. Conventional authentication methods such as face authentication using a built-in camera and fingerprint authentication using a fingertip fingerprint can be adopted as selectable personal authentication methods in addition to motion authentication and password authentication. .

  Although the invention has been particularly shown and described with reference to illustrative embodiments, the invention is not limited to these embodiments and variations thereof. It will be apparent to those skilled in the art that various modifications can be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims.

10: Mobile terminal device (mobile phone)
11: Clock unit 12: Display unit 13: Speaker unit 14: Microphone unit 15: Operation unit 16: Control unit 17: Motion sensor unit 18: Storage unit 19: Program unit 20: Wireless unit 21: Authentication information 22: Authentication condition setting Function 23: Unlock function 24: First personal authentication function 25: Second personal authentication function 31: Password authentication 32: Motion authentication 33, 35: Password authentication 34: Motion authentication information

Claims (4)

A first personal authentication unit and a second personal authentication unit, each having a function of determining successful authentication for unlocking the mobile terminal device;
A first authentication condition that is conditional on successful authentication by one of the first personal authentication means and the second personal authentication means; a second authentication condition that is conditional on successful authentication by both; and One authentication is selected from two or more authentication conditions among the third authentication conditions that select either one of the individual authentication means or the second personal authentication means, and the authentication is successful by the selected personal authentication means. An authentication condition selection means for selecting a condition;
A mobile terminal device comprising: an unlocking unit that unlocks the mobile terminal device when the authentication condition selected by the authentication condition selecting unit is satisfied.   The mobile terminal device according to claim 1, further comprising third personal authentication means for validating selection of authentication conditions by the authentication condition selection means.   The mobile terminal device according to claim 1, wherein the authentication condition selection unit returns to a predetermined selection set in advance after a predetermined period of time has elapsed once the operation of the mobile terminal device is completed.   The first personal authentication unit is a motion authentication unit that determines the movement of the casing of the mobile terminal device, and the second personal authentication unit is a personal identification number authentication unit that uses a personal identification number. The portable terminal device as described in any one.

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