JP2013025680A - Portable information terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable information terminal for preventing a third person who has memorized an image selected by a user from impersonating the user, and succeeding in identity authentication.SOLUTION: Identity authentication means 10 of a portable information terminal 1 is configured to, when a picture transition operation is executed, display a candidate image picture on a touch panel by operating a candidate image display unit 100, and to determine whether or not the executed picture transition operation follows a picture transition rule by operating an operation determination unit 101, and to, when the executed picture transition operation does not follow the picture transition rule, determine that identity authentication has failed, and to, when the executed picture transition operation follows the picture transition rule, determine whether or not a user image as a search object has been searched on the displayed candidate image picture by operating a search determination unit 102, and to, when determining that the user image as the search object has been searched, switch the user image as the search object according to the search order of the user image, and to, when all the user images are searched, determine that the identity authentication has succeeded.

Description

  The present invention relates to identity authentication executed by a smartphone or a mobile phone when unlocking, and more particularly to a technique for authenticating an identity using an image.

  Passwords (passcodes) are generally used for identity authentication that is performed to unlock smartphones and mobile phones, but there are problems such as forgetting passwords, so images that are difficult for users to forget User authentication using scam has been proposed.

  For example, Patent Document 1 includes an image database that stores images registered by a user and an authentication database that stores images for authentication selected from the image database so that personal authentication can be performed using images. In this case, a system is disclosed in which an authentication image selection screen is created by combining a plurality of images from the image database and an authentication image from the authentication database, transmitted to the terminal, and user authentication is performed using the image selected by the user. ing.

  Further, in Patent Document 2, in order to strengthen the identity authentication using a password without imposing a burden on the user, in addition to the identity authentication using a password, the image image information registered in advance by the user is different from the image image information. There has been disclosed a system for executing personal authentication in which image image information belonging to a category is displayed as a selection candidate on a screen and a user selects image image information.

  Further, Patent Document 3 discloses a system in which an image used for authentication can be made unique for each user in order to make it more difficult to disguise an authentication screen used for personal authentication using images.

JP 2004-157675 A JP 2006-163825 A JP 2008-257701 A

  However, when considering the use of personal authentication by selecting an image as in the prior art described above for unlocking a mobile information terminal such as a smartphone or a mobile phone, the mobile information terminal such as a smartphone or a mobile phone is not at home. Therefore, if an image selected by a legitimate user possessing a portable information terminal is viewed by a third party, the image is easy to remember, and the third party remembers the image selected by the user. It is conceivable that a third party who remembers the image selected by the user pretends to be a user and succeeds in authentication.

  Therefore, the present invention is designed so that even if an image selected by the person who owns the portable information terminal is seen by a third party other than the person, the third person who remembers the image selected by the user impersonates the user and authenticates the user. An object of the present invention is to provide a portable information terminal that can prevent success of the mobile phone.

  A first invention that solves the above-described problem is a portable information terminal that can prevent a third party who learns an image selected by a user from impersonating the user and succeeding in personal authentication, and includes a plurality of candidates. Screen transition when searching for the user image using an image, at least one user image that is a candidate image selected by a valid user, a search order of the user image, and a screen transition operation that can be operated in a plurality of directions Remember the rules.

  The personal digital assistant according to the first aspect of the present invention can authenticate the user using an operation for searching for the user image so that the user image is not illegally authenticated even if the user image is known to a third party. As described above, a candidate image display unit that displays on a display a candidate image screen on which at least one candidate image selected according to a predetermined rule is arranged, and an operation determination for determining whether the executed screen transition operation conforms to the screen transition rule And a search determination unit that determines whether or not the user image to be searched is searched on the displayed candidate image screen, and when the screen transition operation is executed, the candidate image display unit is operated to The candidate image screen is displayed on the display, and the operation determination unit is operated to determine whether the executed screen transition operation conforms to the screen transition rule. If the user authentication is determined to be unsuccessful, and the screen transition rule is followed, the search determination unit is operated to determine whether the user image to be searched is searched on the displayed candidate image screen, and search If it is determined that the target user image has been searched, a user authentication unit is provided that switches the user image to be searched according to the search order of the user images and determines that the user authentication is successful when all the user images are searched. .

  In the portable information terminal of the first invention, one or a plurality of candidate images may be arranged on the candidate image screen, and the second invention is the portable image terminal described in the first invention, wherein the candidate image display The unit displays the candidate image screen on which a plurality of candidate images are arranged, and the search determination unit confirms whether or not the user image to be searched is selected on the candidate image screen, whereby the user to be searched It is characterized by determining whether an image has been retrieved.

  Moreover, 3rd invention is a portable information terminal described in 1st invention. WHEREIN: The said candidate image display part displays the said candidate image screen which has arrange | positioned one candidate image, The said search determination part is the said determination part. It is determined whether or not the user image to be searched is searched by confirming whether or not the user image to be searched is displayed on the candidate image screen.

  Furthermore, a fourth invention is the portable information terminal described in the first to third inventions, wherein the user image, the search order of the user image, and the screen transition rule can be set by the user. And registration means for causing the user to set the user image search order and the screen transition rule, and to store the contents set by the user in a memory.

  Furthermore, in a fifth aspect of the present invention, in the portable information terminal described in the fourth aspect of the invention, the registration means includes the user image, the search order of the user image, and the screen transition so that the user can set a candidate image. In addition to the rules, the user is allowed to set a candidate image from images stored in the portable information terminal.

  In the first invention, the screen transition rule can be arbitrarily set. In the sixth invention, the total number of screen transition operations and each screen transition in the portable information terminal described in the first to third inventions. The direction is the screen transition rule, and the candidate image display unit includes a candidate image selected at random when the number of executions of the screen transition operation according to the screen transition rule is less than the total number described in the screen transition rule. Displaying a candidate image screen, if the number of executions of the screen transition operation according to the screen transition rule is the total number of times described in the screen transition rule, displaying the candidate image screen including at least the user image to be searched; The search operation determination unit confirms whether the screen transition direction of the executed screen transition operation matches the screen transition direction of the screen transition rule corresponding to the number of executions of the screen transition operation. Been screen transition operation and judging whether according to the screen transition rule.

  Furthermore, a seventh invention is the portable information terminal described in the sixth invention, wherein the user image, the search order of the user image, and the screen transition rule can be set by the user. A registration means for causing the user to set the total number of screen transition operations and the screen transition direction for each user image as the user image search order and the screen transition rule, and to store the contents set by the user in a memory. It is characterized by.

  Further, according to an eighth aspect of the present invention, in the portable information terminal described in the seventh aspect, the registration means includes the user image, the search order of the user image, and the screen transition so that the user can set a candidate image. In addition to the rules, the user is allowed to set a candidate image from images stored in the portable information terminal.

  According to a ninth aspect, in the portable information terminal described in the first to third aspects, the screen transition direction of the screen transition operation is the screen transition rule, and the candidate image display unit is a candidate selected at random. The candidate image screen including an image is displayed, and the search operation determining unit displays the screen transition direction of the executed screen transition operation as the screen transition direction of the screen transition rule associated with the user image to be searched. Confirming whether the executed screen transition operation conforms to the screen transition rule associated with the user image to be searched.

  Furthermore, a tenth aspect of the present invention is the portable information terminal according to the ninth aspect, wherein the user image, the search order of the user image, and the screen transition rule can be set by the user. The image processing apparatus includes: a registration unit configured to cause a user to set a screen transition direction of a screen transition operation for each user image and store the contents set by the user in a memory as the user image search order and the screen transition rule. And

  Furthermore, in an eleventh aspect of the invention, in the portable information terminal described in the tenth aspect of the invention, the registration unit is configured to allow the user to set a candidate image, wherein the registration unit includes the user image, the search order of the user image, and the screen transition. In addition to the rules, the user is allowed to set a candidate image from images stored in the portable information terminal.

  The twelfth invention is the portable information terminal described in the ninth invention, in which the candidate image to which the display number is added and the screen transition of the screen transition operation so that the user can determine the display order of the candidate images. For each direction, a rule for changing the display number of the candidate image displayed on the candidate image screen is stored, and the candidate image display unit changes the display number according to the screen transition direction of the executed screen transition operation, and A candidate image corresponding to a display number is displayed on the candidate image screen.

  Furthermore, a thirteenth aspect of the present invention is the portable information terminal according to the twelfth aspect of the invention, in which the user can set the user image, the search order of the user image, the screen transition rule, and the display number of the candidate image. Registration means for causing the user to set a screen transition direction of a screen transition operation for each user image and storing the contents set by the user in a memory as the user image, the search order of the user image, and the screen transition rule It is characterized by having.

  Furthermore, in a fourteenth aspect of the invention, in the portable information terminal described in the thirteenth aspect of the invention, the registration means is configured to allow the user to set a candidate image, the user image, the search order of the user image, and the screen transition. In addition to the rule and the display number of the candidate image, the user is allowed to set a candidate image from images stored in the portable information terminal.

  Furthermore, in the fifteenth aspect, in the portable information terminal described in the first to third aspects, when the user image is searched as the screen transition rule for all the user images, the screen of the next screen transition operation is displayed. After a rule for changing the direction of transition is defined, the candidate image display unit displays the candidate image screen including a randomly selected candidate image, and the search operation determination unit determines that a user image has been searched Then, it is determined whether the executed screen transition operation conforms to the screen transition rule by confirming whether the screen transition direction of the next screen transition operation has been changed.

  Further, the sixteenth aspect of the invention is the portable information terminal described in the fifteenth aspect of the invention, in which the user image and the search order of the user image can be set by the user so that the user can set the search order of the user image and the user image. And a registration means for storing the contents set by the user in a memory.

  Furthermore, in a seventeenth aspect of the invention, in the portable information terminal described in the sixteenth aspect of the invention, the registration means is configured to add the user image and the search order of the user image so that the user can set a candidate image. It is characterized by having a user set a candidate image from images stored in a portable information terminal.

  As described above, according to the present invention, since the screen transition operation can only be considered to be a search for some image by a third party, the image selected by the person who owns the portable information terminal is not the person himself / herself. Even if it is viewed by a third party, it is possible to prevent a third party who has learned the image selected by the user from impersonating the user and succeeding in the authentication.

The figure explaining the personal authentication performed with the portable information terminal of this embodiment. The figure explaining the hardware of the portable information terminal of this embodiment. 4A and 4B are diagrams for describing functions of the portable information terminal according to the embodiment. The flowchart explaining operation | movement of the registration means of the portable information terminal in 1st Embodiment. The figure explaining an example of the setting screen which concerns on 1st Embodiment. The flowchart explaining operation | movement of the personal authentication means of the portable information terminal in 1st Embodiment. The figure explaining the screen transition of the candidate image screen in 1st Embodiment. The flowchart explaining operation | movement of the registration means of the portable information terminal in 2nd Embodiment. The figure explaining an example of the setting screen which concerns on 2nd Embodiment. The flowchart explaining operation | movement of the personal authentication means of the portable information terminal in 2nd Embodiment. The figure explaining the screen transition of the candidate image screen in 2nd Embodiment. The flowchart explaining operation | movement of the registration means of the portable information terminal in 3rd Embodiment. The figure explaining an example of the setting screen which concerns on 3rd Embodiment. The flowchart explaining operation | movement of the registration means of the portable information terminal in 4th Embodiment. The figure explaining an example of the setting screen which concerns on 4th Embodiment. The flowchart explaining operation | movement of the personal authentication means of the portable information terminal in 4th Embodiment. The figure explaining the screen transition of the candidate image screen in 4th Embodiment.

  Embodiments of the present invention will now be described to the extent that those skilled in the art of the present invention can implement the invention with reference to the accompanying drawings.

  FIG. 1 is a diagram for explaining personal authentication executed by the portable information terminal 1 of the present embodiment. In a general smartphone or mobile phone, a password (passcode) is used for personal authentication. However, in the mobile information terminal 1 of the present embodiment, from among a plurality of candidate images 20 stored in the mobile information terminal 1, An operation for searching for a user image 20a, which is a candidate image 20 selected in advance by the user, is used for personal authentication. In the present embodiment, the portable information terminal 1 means an information terminal that is carried and used by the user, such as a mobile phone, a smartphone, or a tablet personal computer.

  FIG. 2 is a diagram illustrating hardware of the portable information terminal 1 according to the present embodiment. As shown in FIG. 2, the portable information terminal 1 according to the present embodiment includes a processor 1a in which a CPU, a RAM, a ROM, and the like are mounted as hardware. The processor 1a includes an antenna 1c that receives radio waves. A connected wireless communication circuit 1b, a memory 1d, a clock circuit 1e, a GPS circuit 1f, a touch panel 1g having a display function, an earphone / microphone 1h, an audio / video codec 1i, a triaxial acceleration sensor 1j, and a battery 1k are connected. Yes.

  FIG. 3 is a diagram for explaining functions of the portable information terminal 1 of the present embodiment. The portable information terminal 1 of the present embodiment displays a candidate image screen 2 including at least one candidate image 20 selected according to a predetermined rule as a means realized by a computer program that operates the processor 1a (here, a touch panel). A candidate image display unit 100 displayed in 1g), an operation determination unit 101 that determines whether screen transition operations that can be performed in a plurality of directions (here, four directions of upper, lower, right, and left) performed by the user comply with the screen transition rule; A search determination unit 102 for determining whether the user image 20a to be searched for is displayed on the displayed candidate image screen 2, and when the screen transition operation is executed, the candidate image display unit 100 is operated to operate the candidate image screen. 2 is displayed on the display (here, the touch panel 1g), and then the operation determination unit 101 is operated to execute the executed image. It is determined whether the transition operation conforms to the search rule. If the search operation does not conform to the search rule, it is determined that the personal authentication has failed. If the search operation is obeyed, the search determination unit 102 is activated and the displayed candidate image screen 2 is searched. If the user image 20a to be searched is determined, and it is determined that the user image 20a to be searched is searched, the user image 20a to be searched is switched according to the search order of the user images 20a, and all the user images 20a are searched. Then, the user authentication means 10 that succeeds in the user authentication, the user image 20a, the search order of the user image 20a and the screen transition rule for each user image are set by the user, and the contents set by the user are stored in the memory 1d. Registration means 11 is provided.

  In the registration unit 11 of the present embodiment, the contents that can be set by the user are the user image 20a, the search order of the user image 20a, and the screen transition operation. 20 may be set by the user.

  Contents set by the user using the registration means 11 of the portable information terminal 1, that is, a plurality of candidate images 20, at least one user image 20a that is a candidate image 20 selected by a legitimate user, and a search order of the user images 20a The screen transition rule when searching for the user image 20a using the screen transition operation is stored in the memory 1d of the portable information terminal 1, and the RAM of the portable information terminal 1 stores the determination result of the executed screen transition operation, An operation history for storing the search result of the user image 20a is provided.

  As illustrated in FIG. 1, in this embodiment, when the personal authentication is executed, the candidate image screen 2 including the candidate image 20 registered in the memory 1 d of the portable information terminal 1 is displayed on the touch panel of the portable information terminal 1. The screen transition operation displayed on 1g is an operation for transitioning the candidate image screen 2 displayed on the touch panel 1g.

  In this embodiment, since the portable information terminal 1 includes the touch panel 1g, in FIGS. 1A and 1B, the screen transition operation for transitioning the candidate image screen 2 is described as flick (or swipe). However, the screen transition operation for transitioning the candidate image screen 2 may be an operation of pressing a direction key of a cross key provided in the mobile phone. Further, the candidate image screen 2 may be a candidate image screen 2 in which a plurality of candidate images 20 are arranged as shown in FIG. 1A, and one candidate image 20 is arranged as shown in FIG. 1B. Candidate image screen 2 may be used.

  Further, the content of the search determining unit 102 of the personal authentication means 10 determining whether or not the user image 20a has been searched differs depending on the number of candidate images 20 arranged on the candidate image screen 2, and as shown in FIG. When displaying the candidate image screen 2 in which a plurality of candidate images 20 are arranged on the touch panel 1g, since the candidate image 20 other than the user image 20a is also included in the candidate image screen 2, in order to determine whether the user image 20a has been searched, It is necessary to confirm whether the user image 20a is selected from the plurality of candidate images 20 arranged on the candidate image screen 2.

Further, as shown in FIG. 1B, when displaying the candidate image screen 2 on which one candidate image 20 is arranged, the candidate images 20 other than the user image 20 a are not displayed on the candidate image screen 2, so that the user image 20 a In order to determine whether or not the search has been performed, it is only necessary to confirm whether or not the user image 20a is displayed on the candidate image screen 2.
[First embodiment]

  From here, the first embodiment will be described. In the first embodiment, the number of user images 20a that are candidate images 20 selected in advance by the user is one, and the screen transition rule associated with the user image 20a is the total number of screen transition operations and the screen transition direction of each time. This is an embodiment in which a candidate image screen 2 on which a plurality of candidate images 20 are arranged is displayed on the touch panel 1g.

  In the first embodiment, since the number of candidate images 20 arranged on the touch panel 1g on the candidate image screen 2 is plural, the screen transition operation is executed according to the screen transition rule, and the screen transition operation is executed according to the screen transition rule. When the user image 20a is selected from the candidate image screen 2 that is displayed later, it is determined that the search for one user image 20a is successful, and the number of user images 20a is one. If the search of one user image 20a set to 1 is successful, it is determined that the personal authentication is successful.

  FIG. 4 is a flowchart for explaining the operation of the registration unit 11 of the portable information terminal 1 in the first embodiment.

  When the user performs an operation of registering the user image 20a and the screen transition rule, the registration unit 11 of the portable information terminal 1 operates, and the registration unit 11 of the portable information terminal 1 first stores the memory 1d of the portable information terminal 1 in the memory 1d. A setting screen for displaying a list of registered candidate images 20 is displayed on the touch panel 1g to allow the user to set candidate images 20 as user images 20a (S1).

  FIG. 5 is a diagram illustrating an example of a setting screen according to the first embodiment. FIG. 5A shows a setting screen 3a1 for setting the user image 20a. In FIG. 5A, 12 different figures are used as the candidate images 20. After the user taps the candidate image 20 (here, a star-shaped figure) to be the user image 20a from the candidate images 20 displayed on the setting screen 3a1 illustrated in FIG. By pressing 1l, the candidate image 20 as the user image 20a is selected. In FIG. 5A, the candidate image 20 is a figure, but a photo stored in the portable information terminal 1 can also be used as the candidate image 20.

  When the user sets the candidate image 20 to be used as the user image 20a by the user, the registration unit 11 of the portable information terminal 1 is set as the user image 20a such as the file name and path of the candidate image 20 set as the user image 20a. After storing the file information of the candidate image 20 in the RAM or the like, a setting screen for setting the screen transition rule is displayed on the touch panel 1g, and the user is allowed to set the screen transition rule (S2).

  FIG. 5B shows a setting screen 3a2 for setting screen transition rules. In FIG. 5B, the maximum number of executions of the screen transition operation is 8, and each time (here, the maximum from the first time) The setting frame 3a3 for setting the screen transition direction of the screen transition operation corresponding to the eighth time is provided.

  Each time the setting frame 3a3 is tapped, the arrow 3a4 indicating the screen transition direction displayed in the setting frame 3a3 is displayed as an up arrow indicating an upward direction, a down arrow indicating a downward direction, a right arrow indicating a right direction, and a left direction. When the determination button 1L is tapped, the content set in the setting screen 3a2 illustrated in FIG. 5B is the screen transition operation screen. It is set as the transition direction and its order.

  For example, in FIG. 5B, the screen transition operation is executed four times, the first screen transition direction is the right direction, the second screen transition direction is the upward direction, and the third screen transition direction is the downward direction. The screen transition rule is set so that the fourth screen transition direction is the left direction.

  When the user sets the screen transition rule, the registration unit 11 of the portable information terminal 1 stores the screen transition rule set by the user in the memory 1d in association with the file information of the candidate image 20 selected as the user image 20a ( S3).

  In the first embodiment, since the candidate image screen 2 on which a plurality of candidate images 20 are arranged is displayed, the registration unit 11 of the portable information terminal 2 does not arrange each candidate image 20 on any candidate image screen 2. A predetermined number of candidate image screens 2 on which a plurality of randomly selected candidate images 20 are arranged are generated and stored in the memory 1d (S4), and this procedure is terminated.

  FIG. 6 is a flowchart for explaining the operation of the personal authentication means 10 of the portable information terminal 1 in the first embodiment, and FIG. 7 is a diagram for explaining the candidate image screen 2 in the first embodiment.

  When the user authenticates the user who operates the portable information terminal 1, such as when unlocking the portable information terminal 1, the personal authentication means 10 of the portable information terminal 1 is activated and the personal authentication means of the portable information terminal 1 is activated. 10 initializes the operation history provided in the RAM of the portable information terminal 1 (S10), and then activates the candidate image display unit 100. Here, since the operation history is an initial value, the candidate image display unit 100 The candidate image screen 2 randomly selected from the candidate image screens 2 stored in the memory 1d is displayed on the touch panel 1g (S11).

  When the candidate image display unit 100 displays the candidate image screen 2 on the touch panel 1g, the personal authentication means 10 of the portable information terminal 1 sets the portable information terminal 1 in a state of accepting the user's operation (S12).

  The personal authentication means 10 of the portable information terminal 1 branches the process depending on the operation performed by the user when the user's operation is performed after the portable information terminal 1 is put in a state of accepting the user's operation (S13).

  When the operation performed by the user is a selection operation, the personal authentication unit 10 activates the search determination unit 102 to determine whether the user image 20a to be searched is searched on the displayed candidate image screen 2. Since all the screen transition operations described in the screen transition rule are not executed, the search determination unit 102 of the personal authentication means 10 determines that the screen transition operation performed by the user does not comply with the screen transition rule, and authenticates the user. The means 10 determines that the personal authentication is unsuccessful (S23), returns the processing to the beginning (S10) of this procedure, and initializes the operation history.

  When the operation performed by the user is a screen transition operation, the personal authentication unit 10 of the portable information terminal 1 activates the operation determination unit 101, and the operation determination unit 101 refers to the operation history at this time, and the user Determines whether the screen transition direction of the screen transition operation executed this time complies with the screen transition rule (S14).

  For example, if the screen transition direction of the first screen transition operation is executed according to the screen transition rule at this time, the screen transition direction of the screen transition operation executed for the second time is described in the second of the screen transition rules. Since the screen transition direction described in FIG. 5B is the upward direction in FIG. 5B, the operation determination unit 101 of the personal authentication unit 10 displays the screen executed by the user. If the screen transition direction of the transition operation is upward, it is determined that the screen transition direction of the screen transition operation executed by the user follows the screen transition rule.

  If the screen transition direction of the screen transition operation performed by the user does not match the screen transition direction of the search rule and the operation determination unit 101 determines that the screen transition rule is not followed, the personal authentication unit 10 determines that the personal authentication has failed. (S23), and the process is returned to the beginning (S10) of this procedure.

  When the screen transition direction of the screen transition operation performed by the user matches the screen transition direction of the search rule, and the operation determination unit 101 determines that the screen transition rule is followed, the personal authentication unit 10 performs the screen transition performed by the user. After updating the operation history (S15) by adding the screen transition direction of the screen transition operation to the operation history as information on the successful operation determination, the candidate image display unit 100 is activated. When activated, it is confirmed whether all screen transition operations according to the screen transition rule are completed, and the process is branched depending on the confirmation result (S16).

  In the first embodiment, since the total number of screen transition operations and the screen transition direction of each time are described in the screen transition rule, the number of screen transition directions stored in the operation history at this time is recorded in the screen transition rule. If the screen transition direction and the order stored in the operation history match the total number of screen transition operations being performed, and the screen transition direction and the order of each time described in the screen transition rule match It is determined that all the screen transition operations according to the screen transition rule have been completed, and it is determined that the other operations have not been completed.

  For example, in FIG. 5B, the number of screen transition directions described in the screen transition rule is four, and the input order of the screen transition directions is rightward, upward, downward, and leftward. If the number of screen transition directions stored in the operation history at the time is four and the arrangement order is rightward, upward, downward, or leftward, the screen transition operation according to the screen transition rule is performed. It is determined that everything has been completed.

  The candidate image display unit 100 displays, on the touch panel 1g, the candidate image screen 2 randomly selected from the candidate image screens 2 registered in the memory 1d if all the screen transition operations according to the screen transition rule have not been completed. Then, the process returns to S12 of this procedure.

  If all the screen transition operations according to the screen transition rule have been completed, the candidate image display unit 100 selects the candidate image screen 2 on which the user image 20a is arranged, and uses the selected candidate image screen 2 as the touch panel 1g. Displayed (S18).

  When the candidate image screen 2 on which the user image 20a is arranged is displayed on the touch panel 1g, the personal authentication unit 10 of the portable information terminal 1 sets the portable information terminal 1 in a state of accepting the user's operation (S19), and then When an operation is performed, the process branches depending on the operation performed by the user (S20).

  When the operation performed by the user is a screen transition operation, the personal authentication means 10 of the portable information terminal 1 activates the operation determination unit 101 and causes the operation determination unit 101 to determine the operation performed by the user. Since all the screen transition operations described in the transition rule are executed, the operation determination unit 101 determines that the screen transition operation does not follow the screen transition rule, and returns the process to the top (S10) of FIG. To initialize the operation history.

  When the operation performed by the user is a selection operation, the personal authentication unit 10 activates the search determination unit 102 to determine whether the user image 20a to be searched is searched on the displayed candidate image screen 2. In the first embodiment, since the candidate image screen 2 on which a plurality of candidate images 20 are arranged is displayed, the search determination unit 102 of the personal authentication unit 10 determines whether the candidate image 20 selected by the user is the user image 20a. By doing so, it is determined whether or not the user image 20a to be searched for has been searched on the displayed candidate image screen 2.

  Specifically, the search determination unit 102 of the personal authentication unit 10 of the portable information terminal 1 determines whether the candidate image 20 selected by the user is the user based on whether the candidate image 20 selected by the user matches the file information of the user image 20a. If the candidate image 20 selected by the user is not the user image 20a, it is determined that the personal authentication has failed (S23), and the personal authentication means 10 of the portable information terminal 1 determines the head of this procedure (S10 ) To return to the process and initialize the operation history. If the candidate image 20 selected by the user is the user image 20a, the personal authentication is successful (S22), and this procedure ends.

  FIG. 7 is a diagram for explaining the screen transition of the candidate image screen 2 in the first embodiment. FIGS. 7A to 7E show the candidate image screen 2 before the screen transition operation, Candidate image screen 2 displayed after the first screen transition operation is performed, candidate image screen 2 displayed after the second screen transition operation is performed, and candidate displayed after the third screen transition operation is performed Image screen 2 is a candidate image screen 2 that is displayed after the fourth screen transition operation. In FIG. 7, the user image 20a is a star-shaped figure, and the screen transition directions and the order described in the screen transition rules set in the user image 20a are the right direction, the upward direction, the downward direction, and the left direction. In order of direction.

  As illustrated in FIG. 7, each time the screen transition operation is performed, the candidate image screen 2 is switched, and the six candidate images 20 arranged on the candidate image screen 2 are randomly selected. Is switched, the candidate image 20 displayed on the candidate image screen 2 is also switched.

  Before all screen transition operations are executed in accordance with the screen transition rules (here, screen transition operations in the order of rightward, upward, downward, and leftward), six randomly selected candidate images 20 are displayed. The candidate image screen 2 (FIGS. 7A to 7E) to be arranged is displayed. When all the screen transition operations are executed according to the screen transition rule, the candidate image screen 2 (FIG. 7 (e)) on which the user image 20a (here, a star-shaped figure) is arranged is displayed. When the user image 20a is selected on the candidate image screen 2, the personal authentication is successful.

In the first embodiment, when the screen transition operation is not performed according to the screen transition rule, for example, when the screen transition operation is performed in the downward direction for the first time, the user image is displayed on the candidate image screen 2 in FIG. If the user image 20a is selected before all screen transition operations are executed in accordance with the screen transition rule, such as when 20a is selected, the personal authentication fails.
[Second Embodiment]

  From here, 2nd Embodiment is described. In the second embodiment, the number of user images 20a, which are candidate images 20 selected in advance by the user, is plural, the screen transition rule associated with the user image 20a is the screen transition direction of the screen transition operation, and one candidate image 20 is arranged. This is an embodiment in which the candidate image screen 2 is displayed on the touch panel 1g.

  In the second embodiment, since the number of candidate images 20 to be arranged on the candidate image screen 2 is one, when the candidate image screen on which the user image 20a is arranged is displayed by the screen transition operation according to the screen transition rule. Since it is determined that the search for one user image 20a is successful and the number of user images 20a is plural, a plurality of users set in the portable information terminal 1 in the order of search set in the portable information terminal 1 If it is determined that the search is successful for all the images 20a, it is determined that the personal authentication is successful.

  FIG. 8 is a flowchart for explaining the operation of the registration means 11 of the portable information terminal 1 in the second embodiment.

  When the user performs an operation of registering the user image 20a and the screen transition rule, the registration unit 11 of the portable information terminal 1 operates, and the registration unit 11 of the portable information terminal 1 first includes the user image 20a and the user image 20a. A screen transition rule to be set for the user and a setting screen for allowing the user to set the search order of the user image 20a are displayed on the touch panel 1g. The user image 20a, the screen transition rule to be set for the user image 20a, and the user image 20a The search order is set by the user (S30).

  FIG. 9 is a diagram illustrating an example of a setting screen according to the second embodiment. FIG. 9A illustrates a setting screen 3b according to the second embodiment. In the setting screen 3b illustrated in FIG. 9A, the number of user images 20a that can be set by the user is three, and the user image 20a A setting frame 3b1 for setting the user image 20a and a setting frame 3b2 for selecting the screen transition direction set for the user image 20a are displayed on the touch panel 1g so as to correspond to the numbers indicating the search order. .

  FIG. 9B shows a graphic displayed in the setting frame 3b1 of FIG. 9A, which is an image that becomes the candidate image 20 in the second embodiment. As shown in FIG. 9B, the image that becomes the candidate image 20 in the second embodiment is 12 figures, and every time the setting frame 3b1 in FIG. 9A is tapped, the image in FIG. 9B is displayed. The illustrated figure is switched and displayed, and the displayed figure is set as the user image 20a. In FIG. 9B, the candidate image 20 is a figure, but a photograph stored in the portable information terminal 1 may be used as the candidate image 20.

  FIG. 9C shows an arrow 3b3 displayed in the setting frame 3b2 of FIG. 9A. In FIG. 9C, the up arrow is the up direction, the down arrow is the down direction, the right arrow is the right direction, The left arrow means the left direction, and every time the setting frame 3b2 in FIG. 9A is tapped, the arrow 3b3 illustrated in FIG. 9C is switched and displayed in the setting frame 3b2. The direction corresponding to 3b3 is set as the screen transition direction.

  For example, in FIG. 9A, the user image 20a to be searched first is a round figure, and the screen transition direction set to the user image 20a to be searched first is the right direction. The user image 20a to be searched second is a triangular figure, and the screen transition direction set in the user image 20a to be searched second is the right direction. The user image 20a to be searched third is a star-shaped figure, and the screen transition direction set in the user image 20a to be searched third is the left direction.

  When the user presses the OK button 11 in FIG. 9A and sets the search order of the user image 20a, the screen transition rule, and the user image 20a, the registration unit 11 of the portable information terminal 1 searches the user image 20a. According to the order, the file information of the user image 20a associated with the screen transition rule set by the user is stored in the memory 1d (S31), and this procedure is finished.

  FIG. 10 is a flowchart for explaining the operation of the personal authentication means 10 of the portable information terminal 1 in the second embodiment, and FIG. 11 is a diagram for explaining the screen transition of the candidate image screen 2 in the second embodiment.

  When the user authenticates the user who operates the portable information terminal 1, such as when unlocking the portable information terminal 1, the personal authentication means 10 of the portable information terminal 1 is activated and the personal authentication means of the portable information terminal 1 is activated. 10. After initializing the operation history provided in the RAM of the portable information terminal 1 (S40), the candidate image display unit 100 is operated to display the candidate image screen 2 on the touch panel 1g (S41).

  The candidate image display unit 100 randomly selects one candidate image 20 to be arranged on the candidate image screen 2 from the candidate images 20 registered in the memory 1d of the portable information terminal 1, and one randomly selected one A candidate image screen 2 on which the candidate image 20 is arranged is displayed on the touch panel 1g. In addition, when selecting the candidate image 20 at random, the personal authentication means 10 of the portable information terminal 1 excludes the user image 20a from the selection when displaying the first candidate image 20, and selects the candidate images 20 other than the first one. When displaying, the user image 20a is not excluded from the selection.

  When the candidate image screen 2 on which one randomly selected candidate image 20 is arranged is displayed on the touch panel 1g, the personal authentication means 10 of the portable information terminal 1 sets the portable information terminal 1 in a state of accepting the user's screen transition operation. After (S42), when the user executes a screen transition operation, the personal authentication means 10 of the portable information terminal 1 activates the operation determination unit 101, refers to the operation history at this time, and performs the screen transition performed this time by the user. It is determined whether the screen transition direction of the operation complies with the screen transition rule (S43).

  For example, if the search of the first user image 20a in the search order is successful at this time, the user image 20a to be searched next becomes the second user image 20a in the search order. In FIG. Since the screen transition direction associated with the second user image 20a in the order is set to the right direction, the personal authentication means 10 of the portable information terminal 1 determines that the screen transition direction of the screen transition operation performed by the user is the right direction. If so, it is determined that the screen transition direction of the screen transition operation executed by the user follows the screen transition rule.

  If the operation determination unit 101 determines that the screen transition direction of the screen transition operation performed by the user does not follow the screen transition rule, the personal authentication unit 10 of the portable information terminal 1 determines that the personal authentication has failed (S49). If the operation determination unit 101 determines that the screen transition direction of the screen transition operation performed by the user conforms to the screen transition rule when returning to the beginning (S40) of this procedure, the screen transition of the screen transition operation performed by the user After the operation history is updated by adding the direction to the operation history (S44), the search determination unit 102 is operated to determine whether or not the user image 20a to be searched is searched for on the displayed candidate image screen 2. (S45).

  In the second embodiment, it is determined whether or not the user image 20a to be searched is searched by checking whether or not the user image 20a to be searched is arranged on the displayed candidate image screen 2. For example, if the search of the first user image 20a in the search order has succeeded at this time, the user image 20a to be searched becomes the second user image 20a in the search order. In FIG. Since the second order user image 20a is set to a triangular figure, the personal authentication means 10 of the portable information terminal 1 can use the candidate image screen if the candidate image 20 arranged on the candidate image screen is a triangular figure. It is determined that the candidate image 20 arranged on the user image 20a to be searched.

  When the search determination unit 102 determines that the candidate image 20 arranged on the candidate image screen is not the user image 20a to be searched, the personal authentication means 10 of the portable information terminal 1 returns the process to S41 of this procedure, If the search determination unit 102 determines that the candidate image 20 arranged on the candidate image screen is the user image 20a to be searched, the search history is added to the operation history that the search of the user image 20a is successful, After switching the user image 20a (S46), it is determined whether or not the search of all the user images 20a registered in the portable information terminal 1 has been successful (S47).

  If the user authentication means 10 of the portable information terminal 1 has not been successfully searched for all the user images 20a registered in the portable information terminal 1, the process returns to S41 of this procedure and is registered in the portable information terminal 1. If the search of all the user images 20a is successful, it is determined that the personal authentication is successful (S48), and this procedure is terminated.

  FIG. 11 is a diagram for explaining the screen transition of the candidate image screen 2 in the second embodiment. FIGS. 11A to 11G show the candidate image screen 2 before the screen transition operation and the first time, respectively. Candidate image screen 2 displayed after the second screen transition operation is performed, candidate image screen 2 displayed after the second screen transition operation is performed, and candidate image screen displayed after the third screen transition operation is performed Candidate image screen 2 displayed after the second and fourth screen transition operations are performed. Candidate image screen 2 displayed after the fifth screen transition operation is performed. Displayed after the sixth screen transition operation is performed. This is a candidate image screen 2. In FIG. 11, the user image 20a is a round figure, a triangle figure, and a star figure in the order of search. Further, the screen transition rule set in the round graphic user image 20a is in the right direction, the screen transition rule set in the triangular graphic user image 20a is in the right direction, and in the star graphic user image 20a. The set screen transition rule is in the left direction.

As shown in FIG. 11, each time a screen transition operation is performed, the candidate image screen 2 is switched, and when the user image 20a is retrieved by the screen transition operation according to the screen transition rule, the user image 20a is successfully retrieved. If the user image 20a is successfully searched in the search order registered in the portable information terminal 1, the personal authentication is successful. If the screen transition operation is not executed according to the screen transition rule, such as when the screen transition direction of the screen transition operation is changed during the search of the user image 20a, the personal authentication fails.
[Third embodiment]

  The third embodiment is a modification of the second embodiment, and the candidate image 20 to be arranged on the candidate image screen 2 and the display order of the candidate images 20 are selected from the candidate images 20 registered in the portable information terminal 1 by the user. Is set, and the conditions for successful personal authentication are the same as in the second embodiment.

  In the third embodiment, the display number is added and the candidate image 20 is stored, and further, the rule for changing the display number of the candidate image 20 displayed on the candidate image screen 2 is stored for each screen transition direction of the screen transition operation. The In the third embodiment, a candidate image screen 2 on which one candidate image 20 is arranged is displayed on the touch panel 1g, and when the user performs a screen transition operation, the change rule corresponding to the screen transition direction of the executed screen transition operation is followed. The display number is changed, and the candidate image 20 corresponding to the changed display number is displayed on the candidate image screen 2.

  FIG. 12 is a flowchart for explaining the operation of the registration means 11 of the portable information terminal 1 in the third embodiment.

  When the user performs an operation for registering the user image 20a and the screen transition rule, the registration unit 11 of the portable information terminal 1 operates, and the registration unit 11 of the portable information terminal 1 is first registered in the portable information terminal 1. A list of candidate images 20 is displayed, and the user is allowed to set candidate images 20 used for personal authentication (S50).

  FIG. 13 is a diagram illustrating an example of a setting screen according to the third embodiment, and FIG. 13A is a setting screen 3c that allows the user to set a candidate image 20 used for personal authentication. In FIG. 13A, eight candidate images 20 can be selected as candidate images 20 used for personal authentication. FIG. 13A shows a list of candidate images 20 registered in the portable information terminal 1. A list frame 3c1 to be displayed and eight setting frames 3c2 for setting candidate images 20 used for personal authentication are provided, and one candidate image 20 displayed in the list frame 3c1 is dragged to the setting frame 3c2. Thus, the user sets candidate images 20 to be used for personal authentication.

  A display number is added to each of the eight setting frames 3c2 for setting the candidate images 20 used for the personal authentication, and here, from the setting frame 3c2 on the top, the numbers 1 to 8 are arranged in the clockwise direction. A display number is added.

  Returning to the description of FIG. When the user sets a candidate image 20 to be used for personal authentication, the registration unit 11 of the portable information terminal 1 associates the set file information of the candidate image 20 with the display number added to the setting frame 3c2, and temporarily stores it in a RAM or the like. Then, the set candidate image 20 is displayed, and the search order of the candidate image 20 to be the user image 20a and the user image 20a is set (S51).

  FIG. 13B is a setting screen that allows the user to set the search order of the candidate image 20 to be the user image 20a and the user image 20a from among the candidate images 20 set by the user. In FIG. When eight candidate images 20 to be used for authentication are selected, a setting screen 3c3 in FIG. 13B is displayed, and the user taps the setting frame 3c2 to thereby select eight candidates to be used for user authentication. The user image 20a is selected from the images 20. In FIG. 13B, three user images 20a can be selected, and the search order of the user images 20a is determined by the tap order of the setting frame 3c2.

    Returning to the description of FIG. When the user sets the search order of the candidate image 20 to be the user image 20a and the user image 20a, the registration unit 11 of the portable information terminal 1 sets the search order of the candidate image 20 to be the user image 20a and the user image 20a to the RAM or the like. Is temporarily stored, a setting screen for setting the screen transition rule for each user image 20a is displayed on the touch panel 1g, and the screen transition rule (here, the screen transition direction) is set by the user for each user image 20a. (S52).

  FIG. 13C illustrates a setting screen 3c4 that allows the user to set screen transition rules. In FIG. 13B, when three user images 20a are selected, a setting screen 3c4 in FIG. 13C is displayed. In FIG. 13C, for each user image 20a set in FIG. 13B, a setting frame 3c5 for setting a screen transition rule associated with the user image 20a is displayed.

  Each time the setting frame 3c5 in FIG. 13C is tapped, the arrow 3c6 indicating the screen transition direction is changed to the up arrow indicating the upward direction, the down arrow indicating the downward direction, the right arrow indicating the right direction, and the left indicating the left direction. The screen is switched to an arrow, and the user taps a setting frame 3c5 in FIG. 13C to set a screen transition rule for each user image 20a.

  For example, in FIG. 13C, the user image 20a to be searched first is a round figure, and the screen transition direction associated with the user image 20a to be searched first is set to the right direction. The user image 20a to be searched second is a triangular figure, and the screen transition direction associated with the user image 20a to be searched second is set to the right direction. The user image 20a to be searched third is a star-shaped figure, and the screen transition direction associated with the user image 20a to be searched third is set to the left direction.

  When the user sets the user image 20a and the screen transition rule in the search order of the user image 20a, the registration unit 11 of the portable information terminal 1 sets the file information of the user image 20a associated with the screen transition rule in the search order of the user image 20a. This procedure stores the file information of the candidate image 20 set in the setting frame 3c2 in the memory 1d by adding the display number added to the setting frame 3c2 in FIG. Exit.

  The operation of the portable information terminal 1 when performing personal authentication in the third embodiment is the same as that of the second embodiment except for a part thereof. In S41 of FIG. 10, one candidate image 20 to be used as the touch panel 1g is randomly selected from the candidate images 20 registered in the memory 1d of the portable information terminal 1. When the screen transition operation is executed, the display number is changed according to the screen transition direction of the executed screen transition operation, and the candidate image 20 corresponding to the changed display number is arranged on the candidate image screen 2.

For example, when a change rule for adding one display number in the right direction is set and a change rule for subtracting one display number in the left direction is set, the circular figure in FIG. When a screen transition operation in the right direction is executed in the arranged state, a candidate image 20 (a circular shape with a part cut off) corresponding to the display number (number 2) added by one is a candidate image. When the left screen transition operation is performed on the screen 2, the candidate image 20 (star-shaped figure) corresponding to the display number subtracted by one is disposed on the candidate image screen 2.
[Fourth embodiment]

  From here, 4th Embodiment is described. In the fourth embodiment, a plurality of user images 20a, which are candidate images 20 selected in advance by the user, are used as screen transition rules for all user images 20a. When the user image 20a is searched in order to have a feature that the transition operation direction can be changed, a rule for changing the screen transition direction of the next screen transition operation is determined, and a candidate in which one candidate image 20 is arranged This is an embodiment in which the image screen 2 is displayed on the touch panel 1g.

  In the fourth embodiment, since the number of candidate images 20 displayed on the candidate image screen 2 is one, when the user image 20a is arranged on the candidate image screen image by the screen transition operation according to the screen transition rule, the user If it is determined that the search of the image 20a is successful and it is determined that the search is successful for all the user images 20a in the search order set in the portable information terminal 1, the personal authentication is determined to be successful.

  FIG. 14 is a flowchart for explaining the operation of the registration means 11 of the portable information terminal 1 in the fourth embodiment.

  When the user performs an operation of registering the user image 20a and the screen transition rule, the registration unit 11 of the portable information terminal 1 operates, and the registration unit 11 of the portable information terminal 1 is a candidate registered in the portable information terminal 1. A list of images 20 is displayed, and the user is allowed to set the search order of the user images 20a and 20a (S60).

  FIG. 15 is a diagram illustrating an example of a setting screen according to the fourth embodiment. A list of candidate images 20 registered in the portable information terminal 1 is displayed on the setting screen 3d illustrated in FIG. 15, and the candidate image 20 that becomes the user image 20a is tapped to be a candidate for the user image 20a. An image 20 is set. In FIG. 15, the number of user images 20 a that can be set by the user is three, and the search order of the user images 20 a is determined by the tap order of the candidate images 20. For example, in FIG. 15, the user image 20a to be searched first is a round shape, the user image 20a to be searched second is a triangle shape, and the user image 20a to be searched third is a star shape.

  When the user sets the search order of the user image 20a and the user image 20a by tapping the candidate image 20 displayed on the setting screen 3d illustrated in FIG. 15, when the user taps the decision button 1l in FIG. The registration unit 11 of the portable information terminal 1 stores the file information of the candidate image 20 set as the user image 20a in the memory 1d in the search order (S61), and ends this procedure.

  FIG. 16 is a flowchart for explaining the operation of the personal authentication means 10 of the portable information terminal 1 in the fourth embodiment.

  When the user authenticates the user who operates the portable information terminal 1, such as when unlocking the portable information terminal 1, the personal authentication means 10 of the portable information terminal 1 is activated and the personal authentication means of the portable information terminal 1 is activated. 10. After initializing the operation history provided in the RAM of the portable information terminal 1 (S70), the candidate image display unit 100 is operated to display the candidate image screen 2 on the touch panel 1g (S71).

  The candidate image display unit 100 randomly selects one candidate image 20 from the candidate images 20 registered in the memory 1d of the portable information terminal 1, and the one randomly selected candidate image 20 is arranged. The candidate image screen 2 is displayed. In addition, when selecting the candidate image 20 at random, the personal authentication means 10 of the portable information terminal 1 excludes the user image 20a from the selection when displaying the first candidate image 20, and selects the candidate images 20 other than the first one. When displaying, the user image 20a is not excluded from the selection.

  When the candidate image screen 2 for displaying one randomly selected candidate image 20 is displayed on the touch panel 1g, the personal authentication means 10 of the portable information terminal 1 sets the portable information terminal 1 in a state of accepting the screen transition operation ( S72) When the user executes the screen transition operation, the personal authentication means 10 of the portable information terminal 1 activates the operation determination unit 101, refers to the operation history at this time, and the screen of the screen transition operation performed by the user It is determined whether the transition direction complies with the screen transition rule (S73).

  For example, when the image transition direction of the screen transition operation is right and the search of the user image 20a is successful, if the screen transition direction of the screen transition operation executed by the user is not right, it is determined that the screen transition rule is followed. If the screen transition direction does not change during the search for the user image 20a, it is determined that the screen transition rule is followed.

  If the operation determination unit 101 determines that the screen transition direction of the screen transition operation performed by the user does not comply with the screen transition rule, the personal authentication unit 10 of the portable information terminal 1 determines that the personal authentication has failed (S79). Returning to the beginning of this procedure (S70), when the operation determination unit 101 determines that the screen transition direction of the screen transition operation performed by the user follows the screen transition rule, the screen transition of the screen transition operation performed by the user After the operation history is updated by adding the direction to the operation history (S74), the search determination unit 102 is operated to determine whether or not the user image 20a to be searched is searched on the displayed candidate image 20 screen. (S75).

  In the fourth embodiment, it is determined whether the user image 20a to be searched has been searched by checking whether the user image 20a to be searched is displayed on the displayed candidate image screen 2. For example, if the first user image 20a in the search order is searched at this time, the search target user image 20a becomes the second user image 20a. In FIG. 15, the search order is the second user image 20a. Since the user image 20a is set to a triangular figure, the personal authentication means 10 of the portable information terminal 1 allows the candidate image displayed on the candidate image screen if the candidate image 20 displayed on the candidate image screen is a triangular figure. It is determined that 20 is the user image 20a to be searched.

  If the search determination unit 102 determines that the candidate image 20 arranged on the candidate image screen is not the user image 20a to be searched, the personal authentication unit 10 of the portable information terminal 1 returns the process to S71 of this procedure, If it is determined that the candidate image 20 arranged on the candidate image screen is the user image 20a to be searched, the user image 20a to be searched is added by adding to the operation history that the user image 20a has been successfully searched. After switching (S76), it is determined whether all user images 20a registered in the portable information terminal 1 have been successfully searched (S77).

  If the user authentication means 10 of the portable information terminal 1 has not been successfully searched for all the user images 20a registered in the portable information terminal 1, the process returns to S71 of this procedure and is registered in the portable information terminal 1. If the search of all the user images 20a is successful, it is determined that the personal authentication is successful (S78), and this procedure is terminated.

  FIG. 17 is a diagram illustrating screen transition of the candidate image screen 2 according to the fourth embodiment. FIGS. 17A to 17G show the candidate image screen 2 before the screen transition operation and the first time, respectively. Candidate image screen 2 displayed after the second screen transition operation is performed, candidate image screen 2 displayed after the second screen transition operation is performed, and candidate image screen displayed after the third screen transition operation is performed Candidate image screen 2 displayed after the second and fourth screen transition operations are performed. Candidate image screen 2 displayed after the fifth screen transition operation is performed. Displayed after the sixth screen transition operation is performed. This is a candidate image screen 2. In FIG. 17, the user image 20a is a round figure, a triangle figure, and a star figure in the search order.

  As illustrated in FIG. 17, if the screen transition direction when searching for a circular figure whose search order is the first user image 20 a is the right direction, the triangle of which the search order is the second user image 20 a. The screen transition direction when searching for a graphic is the direction in which the screen transition direction when searching for a circular graphic is changed (here, the left direction), and the search order is the third user image 20a. The screen transition direction when searching for a certain star-shaped figure is the direction in which the screen transition direction when searching for a triangular figure is changed (here, the right direction). As described above, in the fourth embodiment, the screen transition direction when searching for the user image 20a is not determined in advance, and the screen transition direction when searching for the user image 20a for each user authentication changes.

DESCRIPTION OF SYMBOLS 1 Portable information terminal 10 Identity authentication means 100 Candidate image display part 101 Operation determination part 102 Search determination part 11 Registration means 2 Candidate image screen 20 Candidate image 20a User image

Claims (17)

  When searching for a user image using a plurality of candidate images, at least one user image that is a candidate image selected by a legitimate user, a search order of the user images, and a screen transition operation operable in a plurality of directions The screen transition rule is stored in association with the user image, a candidate image display unit that displays a candidate image screen on which at least one candidate image selected according to a predetermined rule is arranged, and the executed screen transition operation When the screen transition operation is executed, an operation determination unit that determines whether to follow the screen transition rule and a search determination unit that determines whether or not the user image to be searched is searched on the displayed candidate image screen. The candidate image display unit is operated to display the candidate image screen on the display, and the operation determination unit is operated to execute the executed screen transition operation. Is determined to comply with the screen transition rule. If the screen transition rule is not complied with, it is determined that the personal authentication has failed. If the screen transition rule is complied with, the search determination unit is operated to display the displayed candidate image screen. If the user image to be searched is determined to be searched, and it is determined that the user image to be searched is searched, the user images to be searched are switched according to the search order of the user images, A personal digital assistant comprising personal authentication means for determining that user authentication is successful when a user image is searched.   The candidate image display unit displays the candidate image screen in which a plurality of candidate images are arranged, and the search determination unit confirms whether the user image to be searched is selected on the candidate image screen, The portable information terminal according to claim 1, wherein it is determined whether a user image to be searched is searched.   The candidate image display unit displays the candidate image screen on which one candidate image is arranged, and the search determination unit confirms whether the user image to be searched is displayed on the candidate image screen. The portable information terminal according to claim 1, wherein it is determined whether a user image to be searched is searched.   The image processing apparatus includes: a registration unit configured to cause the user to set the screen transition rule for each user image and store the contents set by the user in a memory; The portable information terminal according to claim 1.   The registration means, in addition to the user image, the search order of the user image, and the screen transition rule, causes the user to set a candidate image from images stored in the portable information terminal. Item 5. A portable information terminal according to Item 4.   The total number of screen transition operations and the screen transition direction of each time are set as the screen transition rule, and the candidate image display unit is configured such that the number of executions of the screen transition operation according to the screen transition rule is less than the total number described in the screen transition rule. If the candidate image screen including the candidate image selected at random is displayed, and the number of executions of the screen transition operation according to the screen transition rule is the total number of times described in the screen transition rule, the user image to be searched The candidate image screen including at least the screen transition direction is displayed, and the search operation determination unit matches the screen transition direction of the executed screen transition operation with the screen transition direction of the screen transition rule corresponding to the number of executions of the screen transition operation. The portable information terminal according to claim 1, wherein it is determined whether the executed screen transition operation conforms to the screen transition rule.   As the user image, the search order of the user image, and the screen transition rule, the user is allowed to set the total number of screen transition operations and the screen transition direction for each user image, and the contents set by the user are stored in the memory. 7. The portable information terminal according to claim 6, further comprising registration means for storing.   The registration means, in addition to the user image, the search order of the user image, and the screen transition rule, causes the user to set a candidate image from images stored in the portable information terminal. Item 8. A portable information terminal according to Item 7.   The screen transition direction of the screen transition operation is set as the screen transition rule, the candidate image display unit displays the candidate image screen including a randomly selected candidate image, and the search operation determination unit performs the executed screen transition operation. By confirming whether the screen transition direction is the screen transition direction of the screen transition rule associated with the user image to be searched, the executed screen transition operation is associated with the user image to be searched. 4. The portable information terminal according to claim 1, wherein it is determined whether or not the screen transition rule is obeyed.   Registration means for causing the user to set a screen transition direction of a screen transition operation for each user image and storing the contents set by the user in a memory as the user image, the search order of the user image, and the screen transition rule The portable information terminal according to claim 9, wherein the portable information terminal is provided.   The registration means, in addition to the user image, the search order of the user image, and the screen transition rule, causes the user to set a candidate image from images stored in the portable information terminal. Item 13. A portable information terminal according to Item 10.   A candidate image to which a display number is added and a rule for changing a display number of a candidate image to be displayed on the candidate image screen are stored for each screen transition direction of the screen transition operation, and the candidate image display unit executes the executed screen The portable information terminal according to claim 9, wherein a display number is changed according to a screen transition direction of a transition operation, and a candidate image corresponding to the changed display number is displayed on the candidate image screen.   As the user image, the search order of the user image, and the screen transition rule, the screen transition direction of the screen transition operation for each user image and the display number to be added to the candidate image stored in the portable information terminal The portable information terminal according to claim 12, further comprising a registration unit configured to store the contents set by the user in a memory.   In addition to the user image, the search order of the user image, the screen transition rule, and the display number of the candidate image, the registration unit causes the user to set a candidate image from images stored in the portable information terminal. The portable information terminal according to claim 13, characterized in that:   When the user image is searched as the screen transition rule of all the user images, a rule for changing the screen transition direction of the next screen transition operation is determined, and the candidate image display unit selects the candidate image selected at random. And the search operation determination unit determines that the user image has been searched, and then checks whether the screen transition direction of the next screen transition operation has been changed. 4. The portable information terminal according to claim 1, wherein it is determined whether a transition operation follows the screen transition rule.   16. The portable information terminal according to claim 15, further comprising registration means for causing the user to set a search order of the user image and the user image, and to store contents set by the user in a memory. The registration means, in addition to the user image, the search order of the user image, and the screen transition rule, causes the user to set a candidate image from images stored in the portable information terminal. Item 17. A portable information terminal according to Item 16.

Images