JP2006323630A - Key reassignment system, method and program, and cellphone terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent access to functions that handle personal information. <P>SOLUTION: A key reassignment system for changing key assignment information allocated to functions includes: a key assignment data holding part 122 for holding the key inputs of the key assignment information; a password data holding part 121 for holding the password needed to perform functions for the key inputs of the key assignment information; a password change flag holding part 123 for holding as an ON/OFF flag the information about whether or not a password change is necessary for the key assignment information; a key input process part 111 for identifying the key assignment information and password information from input key information; a key reassigning process part 113 for changing the key inputs of the key assignment information held into the key inputs of the key assignment information coming from the key input process part; and a password process part 112 that requests a password change if the flag is on and if the key reassigning process part changes the key inputs of the key assignment information. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile phone terminal having a key assign function. In particular, the present invention relates to a key assignment changing system, method and program for a mobile phone terminal.

  FIG. 5 is a diagram for explaining a key assign function of a mobile phone which is a premise of the present invention. As shown in the figure, in the key assignment function of the mobile phone, various functions are assigned to the key input of the key assignment information. In the key assignment function, as the key input of the key assignment information, as the key input of the key assignment information beginning with “F”, for example, the “local phone number display” is displayed for the key input of the key assignment information of “F0”. A function is assigned, a “dial operation prohibited” function is assigned to a key input of “Fxx” key assignment information, and a “secret” is assigned to a key input of “FΔΔ” key assignment information. “Memory” function is assigned, “F △ ×” key assignment information key input is assigned “password change” function, and “F × △” key assignment information key input is provided. “Forwarding phone setting” function is assigned.

In addition, during the key assignment function, the key input of the key assignment information “FXX” “Dial operation prohibited”, the key input of the key assignment information “F △” “secret memory”, the key input of the key assignment information “F” Password input is required for functions such as “Change Password” for “△ ×”. This is a function for handling personal information, and it is necessary to prevent unauthorized use by a third party.
FIG. 6 is a diagram for explaining the operation of the key assign function that requires the password input in FIG. As shown in the figure, in step 201, a key input of the mobile phone is performed.

In step 202, a password input screen is displayed on the mobile phone, and a password is input. When a four-digit password is entered, it is displayed on the display screen as “***”, so that the password is not seen by a third party against echo back.
In step 203, password verification is performed. If they do not match, the process ends.

In step 204, if the passwords match in the password verification, the function corresponding to the key input of the key assignment information is executed, and the process ends.
For example, if the key input “Fxxx” of the key assignment information is turned on by prohibiting dialing by inputting a password, the operation of the mobile phone becomes impossible, and if turned off, the prohibition of dialing is canceled.

In addition, when the secret memory is turned off by entering a password for the key input “F △△” of the key assignment information, the display of the phonebook registered as a secret is prohibited, and when the secret memory is turned on, the display of the phonebook etc. is prohibited. Is released.
Furthermore, the password can be changed by inputting a password for the key input “FΔ ×” of the key assignment information.

Thus, in the key assignment function, the key input of the key assignment information of the mobile phone is assigned to various functions, and the function assigned by the key input of the key assignment information is executed.
In addition, the mobile phone is provided with a password verification (authentication) function. The password verification function prevents unauthorized operation of a mobile phone by a third party from the viewpoint of security. Furthermore, in the key assignment function, when personal information is handled in the function for key input of key assignment information, the password verification function can be executed for key input of key assignment information from the viewpoint of ensuring security. is there

  However, if the password is known to a third party for some reason, the password will be changed if the password is known to the third party in the order of key presses in an environment where there are many people in the vicinity and the mobile phone is used. There is no other way than to do. If the password is known by a third party without the user's knowledge, leave it on the desk while charging the mobile phone, or leave it off after putting the mobile phone in the jacket If the mobile phone is moved away from the user's body, not only will it be possible to prevent unauthorized operation by a third party, but the key input of the key assignment information assigned to the function for handling personal information will be uniform on the mobile phone. Therefore, there is a problem that it can be easily accessed, and there is a problem that this access should be prevented.

Furthermore, in the key assignment function of the conventional mobile phone, the key input of the key assignment information assigned to the function is uniform in the mobile phone, and there is a problem that the user does not have a key input arrangement that is easy to remember and use, There is a problem that the layout should be easy to remember.
In relation to such problems, there are the following conventional techniques.
Conventionally, in order to provide a simple password input system for portable terminal devices in the Japanese environment, using full-width character strings as passwords and using full-width character strings as passwords makes it possible to use kanji, hiragana, etc. , The selection range of passwords is greatly increased, security functions are improved, and the use of full-width character strings eliminates the need for full-width / half-width conversion when entering passwords (for example, patents) Reference 1).

However, in Patent Document 1, a full-width character string is used as a password in a portable terminal device, but it does not prevent access to a function that handles personal information when the password is known to a third party.
Conventionally, in order to reproduce content suitable for various terminal stations, the PPT transmission unit of each type of terminal station such as a mobile phone or a personal computer includes information indicating the reproduction processing capability of the terminal station itself. Have a PPT and send it to the base station through the communication path, and have the base station distribute the content adapted to each PPT, or the base station distributes the script along with the content. In some cases, content corresponding to the PPT is reproduced in accordance with each script in the terminal station (see, for example, Patent Document 2).

However, although the above-mentioned Patent Document 2 has a unique PPT including information indicating the reproduction processing capability of the terminal station itself, as described above, the function of handling personal information when a password is known to a third party. Does not prevent access.
Also, conventionally, there is a function that allows you to play sound effects without losing the timing by operating the dedicated sound effect keys, and also has a function to select the desired sound from many types of sound effects. In order to be able to adapt to addition and change services, a large number of types of sound effect data are separately stored in the storage unit 6, and the main control unit provides information for specifying the type of sound effect data and a sound generation command In response, the corresponding sound effect data is reproduced and generated from the speaker, and the remote control transmitter has a plurality of sound effect keys for giving a sound effect command to the main control unit. When a sound generation command is received, it is recognized which of the plurality of sound effect keys corresponds to it, and the effect assigned to each sound effect key and registered in accordance with predetermined key assignment information The sound, key assignment information is also what the user is arbitrarily rewritten (e.g., see Patent Document 3).

  However, in Patent Document 3 described above, there is a sound effect assigned to each sound effect key and registered in accordance with predetermined key assignment information, and the key assignment information can be arbitrarily rewritten by the user, as described above. It does not prevent access to functions that handle personal information when the password is known to a third party.

JP 2002-7699 A JP 2001-211143 A JP-A-10-78783

  Therefore, in view of the above problems, the present invention prevents access to a function that handles personal information when a password is known to a third party, and allows a user to input key assignment information assigned to the function. It is an object of the present invention to provide a key assignment changing system, method, program, and mobile phone terminal that enable arrangement of key inputs that are easy to remember and use.

  In order to solve the above problems, the present invention provides a key assignment changing system for changing key assignment information assigned to a function, and a key assignment for holding key input of the key assignment information assigned to the function handling personal information. A data holding unit, a password data holding unit for holding a password required for executing a function for key input of key assignment information held in the key assignment data holding unit, and a key held in the key assignment data holding unit In the assignment information, key change information that requires password input is entered and held as an ON / OFF flag for the key change information that requires password input. If the password needs to be changed and the flag is ON, the key assignment information Pass for requesting password change when key input is changed A key change flag holding unit, a key input unit for inputting key information, a key input processing unit for receiving key information from the key input unit, and identifying key assignment information and password information from the supplied key information; A key assignment change processing unit that changes key input of key assignment information held in the key assignment data holding unit to key input of key assignment information from the key input processing unit, and the password change flag holding unit changes the password. A key assignment change characterized by comprising a password processing section that holds an ON flag that requires a password, and that requests a password change when the key assignment change processing section changes the key input of the key assignment information Provide a system.

Further, the password processing unit holds an OFF flag that does not require a password change by the password change flag holding unit, and changes the password when the key assignment change processing unit changes the key input of the key assignment information. Do not make requests.
Further, the password change flag holding unit sets an OFF flag which is not required for the password change after the password change, and sets the password as ON flag for the password change after a certain period of time since the OFF flag is set. Make changes necessary.

  Further, a key assignment change flag holding unit is provided. The key assignment change flag holding unit holds an ON / OFF flag indicating whether or not the input key of the key assignment information needs to be changed, and after the input key of the key assignment information is changed. The key assignment information input key is changed to an OFF flag which is not required for the key assignment information input key change, and the key assignment information input key is changed to the ON flag for the key assignment information input key change after a certain period of time has elapsed since the flag is turned OFF. Need to change.

Furthermore, the key input of the key assignment information at the time of change is displayed as “***” as in the case of the change of the password, and the key input of the key assignment information is third in response to the echo back. It is displayed so that it cannot be seen.
Furthermore, the present invention provides a key assignment changing method for changing key assignment information assigned to a function, a step of holding key input of the key assignment information assigned to the function handling personal information, and a held key assignment. ON / OFF of password change necessity information for key assignment information that requires password input in the process of holding a password required to execute a function for key input of information and the key assignment information held Input and hold as a flag, and if the password needs to be changed and the flag is ON, a step of requesting a password change when changing the key input of the key assignment information, a step of inputting the key information, and the input key information Identifying key assignment information and password information from the When the key input of the information is changed from the input key information to the key input of the identified key assignment information and the ON flag that requires the password change is held, and the key input of the key assignment information is changed And a step of requesting a password change. A key assignment changing method is provided.

  Furthermore, the present invention provides a program for executing key assignment change for changing key assignment information assigned to a function in a computer, a procedure for holding key input of the key assignment information assigned to the function handling personal information, and Procedure for holding the password required to execute the function for the key input of the key assignment information to be held, and information on whether or not to change the password for the key assignment information that requires the password input with the key assignment information to be held Is entered and held as an ON / OFF flag, and when a password change is required and the flag is ON, a procedure for requesting a password change when changing the key input of key assignment information, a procedure for inputting key information, To identify key assignment information and password information from the entered key information The key input of the key assignment information is changed from the input key information to the key input of the identified key assignment information, and the ON flag that requires the password change is held, and the key input of the key assignment information is entered. And a procedure for requesting a password change when the password is changed. A program for executing a key assignment change by a computer is provided.

  Furthermore, the present invention provides a key assignment data holding unit for holding a key input of the key assignment information assigned to the function that handles personal information in a mobile phone terminal that changes key assignment information assigned to the function, and the key A password data holding unit for holding a password necessary for executing a function for key input of key assignment information held in the assignment data holding unit, and a key assignment information held in the key assignment data holding unit for password input. Password change necessity information is entered and held as an ON / OFF flag for the required key assignment information. If the password change is required and the flag is ON, the password is changed when the key input information is changed. Password change flag holder for making a change request and key A key input unit for inputting information, a key information supplied from the key input unit, a key input processing unit for identifying key assignment information and password information from the supplied key information, and a key assignment data holding unit A key assignment change processing unit for changing the key input of the key assignment information to the key input of the key assignment information from the key input processing unit;

  The password change flag holding unit holds an ON flag that requires a password change, and the key assignment change processing unit requests a password change when changing the key input of the key assignment information. A mobile phone terminal is provided.

  As described above, according to the present invention, the key input of the key assignment information assigned to the function that handles personal information is held, and the password necessary for executing the function for the key input of the held key assignment information is held. In the key assignment information that is held, the password change necessity information is input and held as the ON / OFF flag for the key assignment information that requires the password input, and the password change is necessary and the flag is ON. In this case, when changing the key input of the key assignment information, a password change request is made, the key information is input, the key assignment information and the password information are identified from the input key information, and the key input of the retained key assignment information is input. Change the key information from the entered key information to the key input of the identified key assignment information, and the password must be changed If the N flag is retained and the key input of the key assignment information is changed, the password must be changed. Therefore, even if the password is known to a third party for some reason, the key assignment information is input. Since the key has been changed and is different from the key input of normal key assignment information, it becomes possible to prevent easy access to the function of the mobile phone that handles personal information.

In this case, since the input key of the key assignment information can be changed by the user, it becomes possible to select an input key that is easy for the user to remember.
Furthermore, since the password is changed in conjunction with the change of the input key of the key assignment information, the possibility of the password being known is reduced, the security is improved, and the function of the mobile phone that handles personal information is further improved. It becomes difficult to access easily, and it becomes possible to prevent unauthorized operation by a third party.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing a schematic configuration of a key assignment changing system for a mobile phone terminal. As shown in the figure, the key assignment changing system is composed of an input unit 100, a control unit 110, and a nonvolatile memory 120 of a mobile phone terminal, and operates under program control. In the description of the key assignment changing system, the present invention is specialized. Only the part is described, and other general mobile phone terminals are not described.

The input unit 100 is provided with a key input unit 101. The key input unit 101 is a numeric keypad or function key of a cellular phone, and inputs a key input of key assignment information and a password by a user input.
The control unit 110 includes a key input processing unit 111, a password processing unit 112, and a key assignment change processing unit 113.

Here, the key input processing unit 111 is connected to the key input unit 101, supplied with key information from the key input unit 101, and identifies a key input of a key assignment information and a password from the supplied key information.
The key assignment information has, for example, the alphabet “F” as the first character, and the password information is, for example, a four-digit number. Therefore, due to the difference in the nature of this information, the key assignment information and the password information Identification is performed.

Further, the password processing unit 112 performs password verification and password change on the password information identified by the key input processing unit 111.
Further, the key assignment change processing unit 113 changes the key input of the key assignment information that requires the password input among the key assignment information identified by the key input processing unit 111.

The nonvolatile memory 120 is provided with a password data holding unit 121, a key assignment data holding unit 122, and a password change flag holding unit 123.
Here, the password data holding unit 121 holds a password, provides the password to the password processing unit 112 at the time of password verification, and holds the password changed by the password processing unit 112.

Further, the key assignment data holding unit 122 holds key assignment information for various functions of the mobile phone that handles personal information.
At the time of factory shipment, the key assignment data holding unit 122 is set as a default, and can be changed by user settings after purchase.
For example, the key assignment data holding unit 122 defaults the key input “Fxx” of the key assignment information for the “dial operation prohibition” function, and the key assignment information for the “secret memory” function. The key input “F △ ×” is the default, the key input information “F △ ×” is the default for the “change password” function, and the key assignment information is the “key change” function. Key input “FYY” is set as a default.

  Further, the password change flag holding unit 123 is key assignment information held in the key assignment data holding unit 122, and the password change necessity information is set as an ON / OFF flag for the key assignment information requiring password input. If it is necessary to change the key input of the key assignment information, a password change request is made.

At the time of shipment from the factory, the password change flag holding unit 123 is set to an OFF flag, and can be changed to an ON flag according to user settings after purchase.
FIG. 2 is a diagram for explaining the key assignment information held by the key assignment data holding unit 122 and the password change request information held by the password change flag holding unit 123 in FIG.

As shown in this figure, compared with FIG. 5, the function of “key input change” assigned to the key input “FYY” of the key assignment information is added. Note that a password must be entered to execute the “key input change” function of the key assignment information.
The “key input change” function enables a key input to be changed with respect to a function that requires a password input.

  For example, for the function of “prohibit dial operation”, the key input “Fxx” of the key assignment information is changed to the key input “F011” after the change of the key assignment information; The key input information “FΔΔ” is changed to the changed key input “F012”; for the “password change” function, the key assignment information key input “FΔ ×” is changed. Change to the key input “F013”; change the key input “FYY” of the key assignment information from the key input information “F014” to the key input “F014” after the change.

Furthermore, in the “key input change” function, key input may be changed for some functions, not for all functions that require password input.
In this case, if the first character of the key used for key input after changing the key assignment information is an alphabetic key, the key following the first character may include an alphanumeric key and a function key (including a power key). In addition, the number of digits in the key input after changing the key assignment information is arbitrary.

It is also possible to further change the key input after changing the key assignment information.
In the configuration of key input after changing the key assignment information, one included key may be replaced with another one key. In this case, the changed key input should not be the same as other key inputs. The same applies hereinafter.
Furthermore, in the configuration of key input after changing the key assignment information, a plurality of keys that are continuous with one included key may be replaced.

Furthermore, in the key input configuration after changing the key assignment information, a plurality of consecutive keys included may be replaced with one key.
In the key assignment data holding unit 122, the password change necessity information is held by flag ON / OFF, and either flag ON or flag OFF is set as a batch for all functions requiring password input.

In the case of this flag ON setting, if there is a change in the input key of one key assignment information of a function that requires a password input, a password change is requested. When executing other functions that require password input, verification with the changed password is required.
In the case of this flag OFF setting, if there is a change in the input key of one key assignment information of a function that requires the password input, the password change is not requested.

Further, either flag ON or flag OFF may be set for each function requiring password input.
In the case of this flag ON setting, if there is a change in the input key of one key assignment information of a function that requires a password input, a password change is requested. When the flag OFF setting is performed and another function requiring password input is executed, verification with the changed password is required.

FIG. 3 is a flowchart for explaining a series of operation examples of the key assignment changing system in FIG.
As shown in this figure, in step 211, the key input unit 101 performs key input “FYY” (see FIG. 2) of key assignment information for the “key input change” function.
In step 212, the key input processing unit 111 determines that the key input “FYY” is a key input of key assignment information, and displays a password input screen. In the key input unit 101, for example, “1234” is input as the password. The key input processing unit 111 determines that the input of “1234” is a key input of password information.

In step 213, the password processing unit 112 reads the password stored in the password data holding unit 121 and performs collation with respect to the key input of the password information. If the verification does not match, the process ends.
If the password verification matches in step 214, a key input change screen is displayed to request a key input change of key assignment information that requires password input.

  As described above, the key input information “Fxx” data is changed to “F011” data for the “dial operation prohibited” function; the key assignment information is changed for the “secret memory” function. The key input of “FΔΔ” data is changed to “F012” data; for the “password change” function, the key input information “FΔ ×” data is changed to “F013” data; For the function of “key input change”, the key input information “FYY” data is changed to “F014” data.

In this case, the key input after changing the key assignment information is displayed as “***”, and the password is displayed so that a third party cannot see the password against echo back.
In step 215, the key input after the key assignment information is changed is held in the key assignment data holding unit 122 from the key assignment change processing unit 113.
In this way, key assignment information can be changed.

In step 216, with respect to the key input for changing the key assignment information, the password change flag holding unit 123 is referred to and it is determined whether or not there is a request for changing the password. If there is no request, the process is terminated.
If there is a password change request in step 217, the key input “F014” after changing the key assignment information for the “password change” function is input.

In step 218, a password input screen is displayed and a password input is requested.
In step 219, for example, if the password is entered as “1234”, the password is verified.
In step 220, if the password input matches, a password change request is made. For example, if “4321” is entered as the password, it will be displayed as “***” as described above so that the password cannot be seen by a third party against echo back. Is displayed.

In step 221, the changed password is held in the password data holding unit 121, and the process ends.
If it is determined in step 221 that the password is not known to a third party, the current valid password can be input without changing the password, and the process can be terminated.

Note that the processing in steps 218 and 219 is the same as that in steps 212 and 213, and may be omitted. Further, step 217 may be omitted and the process may directly proceed to step 221.
In this way, the password can be changed after the key input of the key assignment information is changed.

Therefore, according to the present invention, since the input key of the key assignment information can be changed, even if the password is known to a third party for some reason, the input key of the key assignment information is changed. Since it is different from the key input of assignment information, it becomes possible to prevent easy access to the function of the mobile phone that handles personal information.
In this case, since the input key of the key assignment information can be changed by the user, it becomes possible to select an input key that is easy for the user to remember.

  Furthermore, since the password is changed in conjunction with the change of the input key of the key assignment information, the possibility of the password being known is reduced, the security is improved, and the function of the mobile phone that handles personal information is further improved. It becomes difficult to access easily, and it becomes possible to prevent unauthorized operation by a third party.

  In the password change flag holding unit 123 in FIG. 1, password change necessity information is input. If there is a password change request in step 216 in FIG. 3, the password is changed every time the key input of the key assignment information is changed. Will be changed. However, if the password change frequency is frequent and complicated, and there is no problem even if the password change frequency is lowered, the password change is performed with respect to the password change necessity information held in the password change flag holding unit 123. Thereafter, an OFF flag that is not required for the password change may be set, and the password change may be required for the password change after a certain period of time has elapsed since the OFF flag is set. In this case, a certain period can be set by the user. Thereby, it is possible to avoid the trouble of changing the password.

  FIG. 4 is a diagram showing a schematic configuration of a key assignment changing system for a mobile phone terminal, which is a modification of FIG. As shown in this figure, compared with FIG. 1, a key assignment change flag holding unit 124 is provided, and the key assignment change flag holding unit 124 sets ON / OFF information on whether or not to change the input key of the key assignment information. Input and hold as a flag, after changing the key of the key assignment information, change it to an OFF flag that is not required for changing the key of the key assignment information. It is also possible to change the input key of the key assignment information as an ON flag for the change. In this case, a certain period can be set by the user. This makes it possible to prevent forgetting to change the input key of the key assignment information.

  Further, since the key assignment is periodically changed, even if the key input of the key assignment information is known to a third party, the security of the function for the key input of the key assignment information is improved.

  The mobile phone has been described above. However, the present invention is not limited to this, and the present invention can be applied to a PDA (personal digital assistant) and a PHS (simple mobile phone).

It is a figure which shows schematic structure of the key assignment change system of a mobile telephone terminal. 2 is a diagram for explaining key assignment information held by a key assignment data holding unit 122 in FIG. 1 and password change request information held by a password change flag holding unit 123. FIG. It is a flowchart explaining the example of a series of operation | movement of the key assignment change system in FIG. It is a modification of FIG. 1, and is a figure which shows schematic structure of the key assignment change system of a mobile telephone terminal. It is a figure explaining the key assignment function of the mobile telephone used as the premise of this invention. It is a figure explaining operation | movement of the key assignment function which requires the input of a password in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Input part 101 ... Key input part 110 ... Control part 111 ... Key input process part 112 ... Password process part 113 ... Key assignment change process part 120 ... Nonvolatile memory 121 ... Password data holding part 122 ... Key assignment data holding part 123 ... Password change flag holding unit 124 ... key assignment change flag holding unit

Claims (8)

In a key assignment change system that changes key assignment information assigned to a function,
A key assignment data holding unit that holds key input of the key assignment information assigned to the function that handles personal information;
A password data holding unit for holding a password required for executing a function for key input of key assignment information held in the key assignment data holding unit;
The key assignment information held in the key assignment data holding unit stores and holds the password change necessity information as an ON / OFF flag for the key assignment information requiring the password input, and the password needs to be changed. If the flag is ON, a password change flag holding unit for making a password change request when changing the key input of the key assignment information;
A key input section for inputting key information;
Key information is supplied from the key input unit, and a key input processing unit for identifying key assignment information and password information from the supplied key information; and
A key assignment change processing unit for changing the key input of the key assignment information held in the key assignment data holding unit to the key input of the key assignment information from the key input processing unit;
The password change flag holding unit holds an ON flag that requires a password change, and the key assignment change processing unit requests a password change when changing the key input of the key assignment information. A key assignment changing system comprising: The password processing unit holds an OFF flag that does not require a password change by the password change flag holding unit, and when the key assignment change processing unit changes the key input of key assignment information, a password change request The key assignment changing system according to claim 1, wherein no key assignment is performed. After the password is changed, the password change flag holding unit sets the OFF flag that is not required for the password change, and changes the password as an ON flag for the password change after a certain period of time has passed since the OFF flag is set. The key assignment changing system according to claim 1, wherein the key assignment changing system is required. Further, a key assignment change flag holding unit is provided. The key assignment change flag holding unit holds an ON / OFF flag indicating whether or not the input key of the key assignment information needs to be changed, and after the input key of the key assignment information is changed. The key assignment information input key is changed to an OFF flag which is not required for the key assignment information input key change, and the key assignment information input key is changed to the ON flag for the key assignment information input key change after a certain period of time has elapsed since the flag is turned OFF The key assignment changing system according to claim 1, wherein the key assignment changing system is required. Key input of key assignment information at the time of change is displayed as “***” as in the case of password change, and key input of key assignment information is sent to a third party against echo back. 2. The key assignment changing system according to claim 1, wherein the key assignment changing system is displayed so as not to be seen. In the key assignment changing method for changing the key assignment information assigned to the function,
Holding a key input of the key assignment information assigned to the function handling personal information;
A step of holding a password required for executing a function for key input of held key assignment information;
When the key assignment information is held and the password change necessity information is input and held as an ON / OFF flag for the key assignment information requiring the password input, and the password change is necessary and the flag is ON. Is a process of requesting a password change when the key input of the key assignment information is changed,
Entering key information;
Identifying key assignment information and password information from the input key information;
Changing the key input of the held key assignment information to the key input of the identified key assignment information from the input key information;
A key assignment changing method comprising: a step of requesting a password change when an ON flag that requires a password change is held and a key input of key assignment information is changed. In a program that executes a key assignment change to change key assignment information assigned to a function on a computer,
A procedure for holding key input of the key assignment information assigned to the function for handling personal information;
A procedure for storing a password required to execute a function for key input of stored key assignment information,
When the key assignment information is held and the password change necessity information is input and held as an ON / OFF flag for the key assignment information requiring the password input, and the password change is necessary and the flag is ON. Is a procedure for requesting a password change when the key input of key assignment information is changed,
Steps to enter key information,
A procedure for identifying key assignment information and password information from the entered key information,
A procedure for changing the key input of the retained key assignment information from the input key information to the key input of the identified key assignment information,
A program for executing a key assignment change by a computer, comprising a procedure for requesting a password change when an ON flag that requires a password change is held and the key input of key assignment information is changed . In mobile phone terminals that change key assignment information assigned to functions,
A key assignment data holding unit that holds key input of the key assignment information assigned to the function that handles personal information;
A password data holding unit for holding a password required for executing a function for key input of key assignment information held in the key assignment data holding unit;
The key assignment information held in the key assignment data holding unit stores and holds the password change necessity information as an ON / OFF flag for the key assignment information requiring the password input, and the password needs to be changed. If the flag is ON, a password change flag holding unit for making a password change request when changing the key input of the key assignment information;
A key input section for inputting key information;
Key information is supplied from the key input unit, and a key input processing unit for identifying key assignment information and password information from the supplied key information; and
A key assignment change processing unit for changing the key input of the key assignment information held in the key assignment data holding unit to the key input of the key assignment information from the key input processing unit;
The password change flag holding unit holds an ON flag that requires a password change, and the key assignment change processing unit requests a password change when changing the key input of the key assignment information. A mobile phone terminal comprising:

Images