JP2003288273A - Method for disabling data readout from terminal, computer program, and storage medium stored with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for disabling data readout from a terminal when data becomes readable illegally in the case of a loss and the like of the terminal. <P>SOLUTION: A terminal allowing data readout is represented as a K portable terminal, and another terminal for disabling data readout is represented as a P portable terminal. The K portable terminal gives an alarm for notification to the P portable terminal when the data of the K portable terminal becomes readable. According to the notification, the P portable terminal requires a demand for disabling data readout from the K portable terminal according to a method selected from a plurality of methods for disability data readout. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for making a terminal unable to read data in a state where data can be read out illegally due to loss, a computer program for executing the method, and a recording medium recording the program. Regarding

[0002]

2. Description of the Related Art With the recent enhancement of functions of mobile terminals,
In addition to simple telephone numbers and addresses, programs are being stored in mobile terminals. In the future, with the progress of electronic commerce, it has become possible to combine mobile terminals and IC cards.

As described above, there is a sense of expectation that useful functions will increase, but on the other hand, misuse by loss or theft is
It has become a concern for owners of mobile devices. Although there is little loss or theft of mobile devices, it is judged that the current insurance will be sufficient, but the owners, telephone companies, IC card companies, insurance companies, police, etc. who think that the insurance money is not satisfactory It is necessary to deal with this before the government demands to secure the confidentiality of information.

At present, when a mobile terminal is lost or stolen, a telephone company is called to seek assistance. Costs such as call charges for the time required to respond are personally borne. However, currently the caller is clear and the cost is low. In addition, it is possible to search by hearing the signal tone by directly calling the lost mobile terminal from another telephone. It is also possible to check the lost location by directly contacting the person who found the mobile terminal. Therefore, it is unlikely that the mobile terminal you picked up will be abused.

[0005]

However, there is a possibility that privacy information can be read from a lost mobile phone or the like. If a simple electronic notebook and PC notebook are combined, it is necessary to be alert for loss or theft. Although securing of mobile terminal information has been conceived and realized in various ways using the Web and the like, measures such as information deletion of mobile terminals have not been considered.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to make it impossible to read data from a terminal in a state where data can be read illegally due to loss or the like. A method, a computer program for executing the method, and a recording medium having the program recorded therein.

[0007]

In order to solve the above-mentioned conventional problems, the present invention according to claim 1 is a method of making data read by a terminal in a state where data can be read illegally due to loss or the like. When the terminal capable of reading data is the K terminal and the other terminal for making the data reading impossible is the P terminal, when the K terminal is in a state where the data of the K terminal can be read. The step of notifying the P terminal to the K terminal, and by the notification, the P terminal requests the K terminal to disable the data reading according to the method selected from the plurality of methods that disables the data reading. A method of making data reading of the terminal impossible, which comprises the steps of:

According to a second aspect of the present invention, the K terminal performs a process of disabling the data reading of the K terminal by a method according to the selected method in response to the request to disable the data reading. A method for making the data reading of the terminal according to claim 1 which is provided is a solving means.

The present invention according to claim 3 is a method of making data read of a terminal in a state in which data can be read out illegally due to loss or the like, in which the data read out terminal is a K terminal and the data read out is When another terminal for disabling is set as the P terminal, the step of notifying the P terminal when the K terminal is in a state where the data of the K terminal can be read, and the P terminal by the notification, A step of making a confirmation request to the K terminal according to a method selected from a plurality of methods for making data unreadable, and a response of the content according to the selected method by the K terminal according to the confirmation request To the P terminal, the P terminal requests the K terminal to disable data reading according to the method selected by the response, and the K terminal performs the request. Data read-out of the terminal by a method according to the selected method in response to the request to disable data read-out And

According to the present invention of claim 4, a plurality of methods for making the data reading impossible include a method of initializing data, a method of deleting an index of data,
A method for disabling data reading of a terminal according to any one of claims 1 to 3, which comprises two or more methods of disabling by hardware.

According to a fifth aspect of the present invention, the K terminal displays the remaining power capacity of the K terminal on the P terminal, and the P terminal executes each of the plurality of methods according to the remaining power capacity of the K terminal. 5. A solution means having a method of making data read of a terminal impossible according to any one of claims 1 to 4, further comprising a step of displaying permission / prohibition and enabling an executable method selection operation. To do.

The present invention according to claim 6 comprises the steps of notifying the P terminal of the result of the processing that makes the K terminal unable to read data, and the step of displaying the notified result by the P terminal. The method for making data reading of the terminal described in any one of 1 to 5 to be a solution means.

The present invention according to claim 7 comprises the step of backing up the data of the K terminal to the P terminal before the data of the K terminal is ready to be read. The method of making the data read out of is a solution.

According to the eighth aspect of the present invention, when the data read cannot be disabled by the process of disabling the data read performed by the P terminal by the K terminal, the server does not allow the K terminal to read the data. The step of requesting the result of the enabling process, the step of the K terminal responding to the server with the result of the process of disabling the data reading in response to the request from the server, and the result of the process of which the server responds If it indicates that reading could not be made impossible, the step of making a request to make the data reading impossible to the K terminal, and the K terminal making the data reading impossible by the request from the server. The method for making the data read of the terminal impossible according to any one of claims 1 to 7 is a solving means.

In the present invention of claim 9, the P terminal continuously makes the request for making the data read impossible until the data read becomes impossible or the set number of repetitions is reached. A method of making data reading of a terminal impossible according to any one of claims 1 to 8 is a solving means.

The present invention according to claim 10 is characterized in that the server continuously makes a request for making the data read impossible until the data read becomes impossible or a set number of repetitions is reached. A method for making data reading of the terminal impossible according to claim 8 or 9 is a solving means.

The present invention according to claim 11 is characterized in that the P terminal makes a request for disabling data read different from the request for disabling the previous data read according to the remaining power capacity of the K terminal. A method of making data reading of the terminal according to any one of claims 1 to 10 is a solving means.

According to a twelfth aspect of the present invention, the server makes a request for disabling data read different from a request for disabling data read last time in accordance with the remaining power capacity of the K terminal. A method for making data reading of the terminal impossible according to any one of claims 8 to 10 is a solving means.

The present invention according to claim 13 relates to claims 1 to 1.
A computer program for executing the method described in any one of 2) is a solution.

The present invention of claim 14 relates to any one of claims 1 to 1.
A recording medium recording a computer program for executing the method according to any one of 2) is a solution.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic functional block diagram for realizing a method of making data read of a terminal according to the present invention impossible. In the present embodiment, a method for making data reading impossible for a terminal in a state where data can be read illegally due to loss or the like Run with the terminal.

Here, one portable terminal from which data can be read is referred to as a "K portable terminal", and the other is referred to as a "P portable terminal". Each mobile terminal has its own unique ID
Is set, and by designating the ID of the other party, it becomes possible to communicate with the other party via a telephone line or the like.

Further, in the present embodiment, making data reading impossible is referred to as "data deletion" for convenience. Therefore, the data deletion request or the like can be read as a request or the like that makes it impossible to read the data.

The K mobile terminal and the P mobile terminal can mutually back up with the backup function of the mobile terminal information.
Further, the K portable terminal can issue an alarm with an alarm issuing function for theft and loss. The P mobile terminal can receive an alarm with an alarm reception function such as loss of theft. The P mobile terminal can make a connection request using the connection confirmation request function between the mobile terminals. The K mobile terminal can make a connection response by the connection confirmation response function between the mobile terminals.
The P mobile terminal can make a connection request with the continuation confirmation request function between the mobile terminals. The K mobile terminal can make a connection response by the continuous confirmation response function between the mobile terminals. The P mobile terminal can make a confirmation request with the mobile terminal data confirmation request function. The K mobile terminal can respond with confirmation contents by the mobile terminal data confirmation function (or index confirmation function or status confirmation function).
The P mobile terminal can make a deletion request with the mobile phone data deletion request function. K mobile terminals can delete data,
Further, the processing execution result transmission function can be used to transmit the processing execution result. The P mobile terminal can receive and display the processing execution result by the processing execution result display function. In addition, K mobile terminal is K
The terminal and the P mobile terminal correspond to the P terminal.

In order to delete the data from the portable terminal, both power supplies must be started in the minimum standby mode, and the remaining power supply that can perform the data deletion process after conversion to the normal power supply mode is secured. It is necessary.

FIG. 2 is a functional block diagram of data backup.

The K mobile terminal requests the P mobile terminal to connect using the connection confirmation function between the mobile terminals. The P mobile terminal confirms the connection by the connection (response) function between the mobile terminals. The directory is confirmed by the directory confirmation function between the mobile terminals, and the backup to the P mobile terminal is performed by one of the three backup patterns. However, if the data stored in the P mobile terminal and the data stored in the K mobile terminal are the same at the time of updating, a message indicating that backup is unnecessary is displayed and the operation is canceled. In addition, by urging the user to pay attention to the update contents (update no, update caution, updatable), it is determined whether deletion can be executed according to conditions.

The backup pattern 1 is a method for automatically performing regular backup based on the initial setting information. That is, the user of the P mobile terminal sets the backup execution date, the execution time, and the like. The backup pattern 2 is a method in which the user activates the backup irregularly. The backup pattern 3 is a method in which the user performs local backup (via a memory card or by connecting a cable between mobile terminals). P
The mobile terminal sends a backup completion response in any of the patterns. The local backup is effective when the backup via the network is disliked and the data security is desired to be strengthened.

Processing common to each backup will be described.

When the user of the P mobile terminal selects the backup processing of the K mobile terminal, the P mobile terminal requests the K mobile terminal for backup information. Then K mobile terminal is P
The directory information of the mobile terminal and the K mobile terminal is checked. Then, the difference data (or all data) and the directory of the K mobile terminal are transmitted. The P mobile terminal updates the backup information.

In the present embodiment, as a plurality of methods (also referred to as patterns) for making the data reading of the K portable terminal impossible, a method of initializing the data, a method of deleting the index of the data, and a hardware Selectively perform one of the methods to disable it in. Note that only two of these three may be selected.

In the method of deleting the index of the data and the method of disabling it by hardware, the data is not actually deleted, but it is called data deletion for convenience.

FIG. 3 is a functional block diagram in the case of pattern 1: data initialization.

The K mobile terminal issues an alarm to the P mobile terminal when the data from the K mobile terminal becomes illegitimately read because the distance from the P mobile terminal exceeds a preset distance. When the K mobile terminal transmits an alarm by the alarm (transmission) function of theft loss or the like, the P mobile terminal receives the alarm by the alarm reception function of the theft or loss and sounds the alarm. When the P mobile terminal makes a connection request using the connection confirmation request function between mobile terminals, the K mobile terminal makes a connection confirmation response using the connection confirmation response function between mobile terminals.

Before the P mobile terminal continuously requests the K mobile terminal to perform a connection, the P mobile terminal performs a display for starting data deletion and a display for stopping the data deletion, requests a connection by a start operation, and cancels the processing by a cancel operation. To do. Also, as a connection request of the P mobile terminal to the K mobile terminal, the terminal unique ID + day ...
+ Business type (... is automatically assigned a random number with 5 digits as an ID unique to the terminal + day + time). Then, the K mobile terminal checks a random number with the confirmation of the connection information (terminal unique ID + day ... + business type) as a key and a random number of 5 digits for synchronization with the P mobile terminal, and confirms the match. To do. Also, the file update date of the K mobile terminal is extracted, and a response indicating completion of connection is sent to the P mobile terminal. This content is the same in the case of deletion patterns 2 and 3 described below.

Also, the current backup content is confirmed. The difference between the file update dates of the P mobile terminal and the K mobile terminal is displayed. It is also possible to display the file update dates of the P mobile terminal and the K mobile terminal. If the data in the K mobile terminal is not sufficiently backed up in the P mobile terminal, the data can be manually backed up.

When the P mobile terminal makes a continuation request by the continuation confirmation request function between the mobile terminals by the start operation, the K mobile terminal makes a continuation confirmation response by the continuation confirmation response function between the mobile terminals. If the connection is impossible, the process is repeated.

When connected, the K portable terminal notifies the P portable terminal of the remaining capacity of the power source and displays it. Then, the P mobile terminal displays the feasibility of execution for each of the three patterns according to the notified remaining capacity of the power source, and enables the operation of selecting an executable pattern.

The power consumption is most frequently consumed in the data initialization, followed by the index deletion and the unusable by the hardware. Therefore, when the remaining power capacity is in the minimum range, the unusable by the hardware is only used. If it is possible, the index can be deleted when the remaining capacity of the power source is in a range larger than the range, and the data can be initialized when the remaining capacity of the power source is in a range larger than the range. It is more suitable.

Here, it is assumed that pattern 1: data initialization is selected.

When the P mobile terminal makes a data confirmation request to the K mobile terminal by the mobile terminal data confirmation request function, the K mobile terminal transmits the data content by the mobile terminal data content confirmation function.
After the P mobile terminal confirms the terminal data content, when the data deletion request function issues a data deletion request (data initialization request), the K mobile terminal performs data initialization by the mobile terminal data deletion function. This deletes all the data. Since there is a case where data initialization cannot be performed, the K mobile terminal responds with the data deletion execution result using the data deletion execution result transmission function. The P mobile terminal displays the data deletion execution result using the data deletion execution result display function and notifies the K mobile terminal of the completion.

Although not shown, a P portable terminal or K
The portable terminal notifies the telephone company's server of the requesting P portable terminal and the number of the K portable terminal that has taken the initialization format, and the telephone company's server stores this result information.

Since the data initialization format erases the data itself, it is particularly used when user-specific setting information and important data are stored.

As a method of recovering the K mobile terminal, a method of purchasing another mobile terminal at the telephone company, initializing it, and restoring the data of the P mobile terminal to the K mobile terminal is adopted.

FIG. 4 is a functional block diagram in the case of pattern 2: index deletion. The process is the same as that of FIG. 3 until the K portable terminal makes a continuous confirmation response using the continuous confirmation response function of the portable terminal data.

Next, the K portable terminal notifies the P portable terminal of the remaining power source of its own and displays it. Then, the P mobile terminal displays the feasibility of execution for each of the three patterns according to the notified remaining capacity of the power source, and enables the operation of selecting an executable pattern.

When the remaining capacity of the power supply is in the minimum range, the hardware cannot be used only. When the remaining capacity of the power supply is in a range larger than the range, the index can be deleted, and the remaining capacity of the power supply is reduced. If the range is larger than the range, it is more suitable to perform processing such as enabling data initialization.

Here, it is assumed that pattern 2: index deletion is selected.

When the K mobile terminal makes a continuous confirmation response with the mobile terminal data continuous confirmation response function, the P mobile terminal issues an index confirmation request with the mobile terminal index confirmation request function. The K mobile terminal transmits the index content by the mobile terminal index content confirmation function.

After confirming the contents of the mobile terminal index, the P mobile terminal makes an index deletion request by the deletion request function.
The K mobile terminal deletes the index using the mobile terminal index delete function. In addition, since it may not be possible to delete it,
The index deletion execution result transmission function sends the index deletion execution result. The P mobile terminal displays the index deletion execution result by the index deletion execution result display function and notifies the K mobile terminal of completion.

Index deletion requires a shorter processing time than data initialization. Therefore, it is effective to delete the index if the urgency of preventing data leakage is urgent. In addition, the index deletion is effective in consideration of the case where the mobile phone to be deleted has a low power supply.

Although not shown, a P mobile terminal or K
The portable terminal notifies the telephone company's server of the request source and the number of the portable terminal for which index deletion has been addressed, and the telephone company's server saves this result information.

As a method for recovering the K portable terminal, a method is employed in which the K portable terminal is searched for a certain period of time, and if found, the data of the P portable terminal can be restored by a user operation.

Although the deletion of only the index is not absolutely necessary, the data cannot be taken out unless the user is a professional, so a certain degree of security can be obtained.

Here, a modified example of the pattern 2 will be described.

When deleting a specific file of the K mobile terminal, the P mobile terminal selects a job with the user ID and password input to the terminal. The P mobile terminal displays the file update date of the K mobile terminal. When the number next to the file is input to the P mobile terminal, the P mobile terminal requests the K mobile terminal to delete the file. The K mobile terminal deletes the corresponding file and notifies the P mobile terminal of the corresponding file deletion completion, and the P mobile terminal displays the completion message of the corresponding file deletion completion.

Further, the P portable terminal or the K portable terminal notifies the telephone company's server of the request source and the number of the portable terminal which has taken the file deletion countermeasure, and the telephone company's server stores the result information.

FIG. 5 is a functional block diagram in the case of pattern 3: disabling by hardware. The process is the same as that of FIG. 3 until the K portable terminal makes a continuous confirmation response using the continuous confirmation response function of the portable terminal data.

Next, the K portable terminal notifies the P portable terminal of the remaining power source of its own and causes the P portable terminal to display it. Then, the P mobile terminal displays the feasibility of execution for each of the three patterns according to the notified remaining capacity of the power source, and enables the operation of selecting an executable pattern.

When the remaining capacity of the power source is in the minimum range, the hardware cannot be used only. When the remaining capacity of the power source is in a range larger than the range, the index can be deleted, and the remaining capacity of the power source is reduced. If the range is larger than the range, it is more suitable to perform processing such as enabling data initialization.

Here, it is assumed that the pattern 3: Unusable by hardware is selected.

When the K mobile terminal makes a continuous confirmation response with the mobile terminal data continuous confirmation response function, the P mobile terminal makes a mobile terminal state confirmation request with the mobile terminal state confirmation request function. The K mobile terminal notifies the mobile terminal status by the mobile terminal status confirmation function.

After confirming the state of the portable terminal, the portable terminal asks for an unusable state (power off, lock, etc.) with the unusable process request function.
I do. The K mobile terminal has a mobile terminal unusable processing function, and performs the requested mobile terminal unusable processing. In this case, it is possible to select a device that destroys the medium recording portion or the like similar to a simple device that keeps the mobile terminal from getting wet and moving. Since the unusable process may not be performed in some cases, the process execution result is transmitted by the unusable process execution result transmission function. The P mobile terminal displays the unusable process execution result by the unusable process execution result display function and notifies the K mobile terminal of the completion.

Although not shown, a P portable terminal or K
The portable terminal notifies the telephone company's server of the request source and the number of the portable terminal that has been disabled by the hardware, and the telephone company's server stores this result information.

The method for recovering the K mobile terminal is to purchase and initialize another mobile phone at the telephone company, and use the data of the P mobile terminal to perform the K
A method of restoring the mobile terminal is adopted.

By the way, if the data of the K mobile terminal cannot be deleted from the P mobile terminal, the data can be deleted from the telephone company.

FIG. 6 is a functional block diagram of a pattern for deleting data from the telephone company when data deletion from the K mobile terminal cannot be performed from the P mobile terminal.

The server of the data center of the telephone company calls the mobile terminal number of the K mobile terminal notified by the owner of the P mobile terminal or the like to request the K mobile terminal for connection. When the K mobile terminal confirms the connection, the server of the telephone company makes a data deletion result request for the data deletion performed by the request of the P mobile terminal to the K mobile terminal.

The K mobile terminal responds with the result of data deletion performed by the request of the P mobile terminal. If the data deletion result indicates that the data has not been deleted, the server of the telephone company requests the data confirmation by the mobile terminal data confirmation request function. K The mobile terminal transmits the data content by the mobile terminal data content confirmation function. When the telephone company server confirms the terminal data content and then performs the data deletion request function, the K mobile terminal deletes all data by the mobile terminal data deletion function. Since there is a case where the data cannot be deleted, the K mobile terminal responds with the data deletion execution result using the data deletion execution result transmission function. The telephone company server displays the data deletion execution result using the data deletion execution result display function and notifies the K mobile terminal of completion. Since the server of the telephone company saves the data deletion result information and counts the billing information, it is possible to charge the price of the data urgent deletion when the mobile terminal is lost later.

Next, an application example of the embodiment will be described.

If the data deleting process is not completed, the following method can be executed.

First, the K portable terminal may transmit an alarm to the P portable terminal after a certain period of time or the like so that the above data deleting process can be performed again.

Further, the P portable terminal or the server can continuously (for example, periodically) make a data deletion request to the K portable terminal until the data is deleted. The data deletion request can be made after a lapse of time set by the user or the server operator. Further, the data deletion request can be made until the number of times of repetition of the data deletion request set by the user or the like is reached, and even if the data cannot be deleted, the data deletion request can be finished with the number of times.

The pattern can be changed for each deletion request. In the case of the deletion request of the later time, it is preferable that the deletion request is made in a pattern in which it is more difficult to take out the data than in the past pattern, because the time has passed since the previous time. This is the same as the user's pattern selection method, but as described above, even when the P mobile terminal or K mobile terminal automatically makes a deletion or a deletion request, it is more difficult to retrieve data than in the past. It is preferable that the pattern is deleted in a high pattern.

If security is ensured or if security is not required, the P portable terminal may be a computer having a communication function and may be configured to communicate via the Internet or the like. In order to ensure security, encrypted communication or scrambled communication may be performed.

The K mobile terminal and the P mobile terminal may be configured as a common mobile terminal having the functions of the other party. At that time, the telephone company server is also configured to receive and store data from both parties. Further, the K portable terminal can be replaced with another type of terminal such as a notebook computer. In that case, other terminals such as laptops
It is necessary to have a standby mode that can connect to the Internet, etc., and have a residual power source that deletes data after the power source (battery, normal power source) starts up.

In addition, when data is stolen or lost, it is urgent to delete data.
In addition, if absolutely necessary, the K mobile terminal may perform the deletion process by itself instead of deleting the P mobile terminal or the request by the server. For example, the patterns 2 and 1 can be deleted in this order. However, in this case, the automatic deletion function is an essential condition that the data is only for the K mobile terminal and is regularly backed up from the K mobile terminal to the P mobile terminal.

When both the K mobile terminal and the P mobile terminal are lost, the data can be deleted according to the regulations of the telephone company. However, in this case, neither mobile terminal can be used.

As described above, according to the embodiment of the present invention, the step in which the K terminal notifies the P terminal when the data of the K terminal can be read, and the P terminal notifies the notification. Thereby making a request to the K terminal for disabling data read according to a method selected from a plurality of methods for making data read impossible, thereby disabling data read of the terminal. Since the method is executed, the method according to the situation can be selected to disable the data reading of the terminal.

Further, the K terminal performs a process of making the data reading of the K terminal impossible by a method according to the selected method in response to a request to make the data reading impossible from the P terminal. Since the method of making the terminal data read impossible is executed, it is possible to make the terminal data read impossible by selecting the method according to the situation. In addition, the K terminal notifies the P terminal when the data of the K terminal is ready to be read, and the P terminal is selected from a plurality of methods for making the data reading impossible by the notification. A request for confirmation to the K terminal according to the method, a step for the K terminal to make a response to the P terminal according to the selected method in response to the confirmation request, and the P terminal returns the response. The step of making a request to the K terminal for disabling data reading according to the selected method according to the method, and the method according to the selected method by the request for disabling the data reading by the K terminal. Since the method of making the data reading of the terminal impossible is executed, the method including the step of performing the processing of making the data reading of the K terminal impossible, so the method according to the situation is selected. It can be impossible to read data of the terminal Te.

Since a plurality of methods of making data unreadable include two or more of a method of initializing data, a method of deleting a data index, and a method of making it unusable by hardware. It is possible to make the data reading of the terminal impossible by a method selected from two or more of a method of initializing the data, a method of deleting the index of the data, and a method of disabling by the hardware.

In addition, the K terminal sets the remaining power capacity of the K terminal to P
And a step of allowing the P terminal to display whether or not each of the plurality of methods can be performed according to the remaining power capacity of the K terminal and to enable the selection operation of an executable method. Since the method for making the data reading of the terminal impossible is executed, it is possible to make the method impossible to read the data of the terminal by selecting the method according to the remaining power capacity.

Further, the terminal K has a step of notifying the P terminal of the result of the processing for making the data read impossible, and the step of displaying the notified result by the terminal P disables the data read of the terminal. Since the method described above is executed, the method according to the situation can be selected to disable the data reading of the terminal, and the result can be confirmed at the P terminal.

Further, the method for making the data read of the terminal impossible is provided, which comprises the step of backing up the data of the K terminal to the P terminal before the data of the K terminal is ready to be read. It is possible to make the data reading of the K terminal impossible and to read the data from the P terminal.

Further, when the data reading cannot be disabled by the processing that disables the data reading performed by the P terminal by the K terminal, the result of the processing by which the server disables the data reading by the K terminal Requesting
The step in which the K terminal responds to the server with the result of the process that makes the data read impossible by the request from the server, and the server shows that the result of the response process cannot make the data read impossible. Data of the terminal, the step of making a request to the K terminal to make the data reading impossible and the step of making the K terminal to make the data reading impossible by the request from the server Since the method of making the reading impossible is executed, it is possible to make the server unable to read the data that the P terminal cannot make the data reading impossible.

Further, since the P terminal continuously makes the request for making the data reading impossible until the data reading becomes impossible or until the set number of repetitions is reached, the data reading cannot be surely made impossible. can do.

Further, since the server continuously makes the request for making the data reading impossible until the data reading becomes impossible or until the set number of repetitions is reached, the data reading is definitely made impossible. be able to.

Further, since the P terminal makes a request to disable data reading different from the previous request to disable data reading according to the remaining capacity of the power supply of the K terminal, the data reading is requested by the previous request. Even if it cannot be made impossible, it becomes possible to make data reading impossible next time.

Further, since the server makes a request for disabling data read different from the request for disabling the previous data read according to the remaining power capacity of the K terminal,
Even if the data read cannot be disabled by the previous request, the data read can be disabled next time.

The computer program for causing the terminal such as the K portable terminal or the P portable terminal or the server such as the server of the telephone company to execute the above-described processing is a semiconductor memory,
It can be widely distributed by being recorded on a computer-readable recording medium such as a magnetic disk, an optical disk, a magneto-optical disk, a magnetic tape, or transmitted via a communication network such as the Internet.

[0092]

As described above, according to the method of making the data reading of the terminal impossible according to the present invention, the K terminal which is in a state where the data can be read out illegally due to loss or the like.
The step of notifying the P terminal when the data of the terminal is ready to be read, and the P terminal notifies the data reading according to the method selected from the plurality of methods for making the data reading impossible. Since the request for disabling is made to the K terminal, it is possible to disable the data reading of the terminal by selecting a method according to the situation.

[Brief description of drawings]

FIG. 1 is a schematic functional block diagram for realizing a method of disabling data reading of a terminal according to the present invention.

FIG. 2 is a functional block diagram of data backup.

FIG. 3 is a functional block diagram in the case of pattern 1: data initialization.

FIG. 4 is a functional block diagram in the case of pattern 2: index deletion.

FIG. 5 is a functional block diagram in the case of a pattern 3: disabling by hardware.

FIG. 6 is a functional block diagram of a pattern for deleting data from a telephone company when data deletion of a K mobile terminal cannot be performed from a P mobile terminal.

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Claims (14)

[Claims] 1. A method of disabling data reading of a terminal in a state in which data can be illegally read due to loss or the like, wherein a terminal capable of data reading is a K terminal, and a terminal capable of data reading is disabled. When another terminal is P terminal,
A step in which the K terminal notifies the P terminal when the data of the K terminal can be read, and a method selected from the plurality of methods by which the P terminal makes the data reading impossible by the notification. And making a request to the K terminal for disabling data reading according to the above method. 2. The method according to claim 1, wherein the K terminal performs a process of disabling the data reading of the K terminal by a method according to the selected method in response to the request to disable the data reading. To disable the reading of data from other terminals. 3. A method for disabling data reading of a terminal in a state in which data can be illegally read due to loss or the like. When another terminal is P terminal,
A step in which the K terminal notifies the P terminal when the data of the K terminal can be read, and a method selected from the plurality of methods by which the P terminal makes the data reading impossible by the notification. Requesting a confirmation request to the K terminal in response to the confirmation request, the K terminal making a response to the P terminal in accordance with the selected method in response to the confirmation request, Making a request to the K terminal for disabling data read according to the selected method, and the K terminal using the method according to the selected method according to the request for disabling data read. And a step of performing a process of making data read of the terminal impossible. 4. The plurality of methods of disabling data reading include two or more of a method of initializing data, a method of deleting an index of data, and a method of disabling by hardware. 4. A method for making data read of a terminal impossible according to any one of claims 1 to 3. 5. A step in which the K terminal displays the remaining power capacity of the K terminal on the P terminal, and the P terminal displays and executes each of the plurality of methods according to the remaining power capacity of the K terminal. 5. A method for disabling data reading of a terminal according to any of claims 1 to 4, characterized in that it comprises the step of enabling a selection operation of possible methods. 6. The method according to claim 1, further comprising a step of notifying the P terminal of a result of the process in which the K terminal cannot read the data, and a step of displaying the notified result by the P terminal. The method of making the data read of the terminal described in 1. 7. The data read of the terminal according to claim 1, further comprising a step of backing up the data of the K terminal to the P terminal before the data of the K terminal is ready to be read. How to do. 8. The result of the process of making the K terminal unable to read the data when the P terminal cannot make the data reading impossible by the process of making the K terminal impossible to read the data. And the K terminal responds to the server with the result of the processing that makes the data read impossible by the request from the server, and the server has the result of the response processing that makes the data read impossible. If not, the step of requesting the K terminal to disable the data reading, and the step of the K terminal performing the process of disabling the data reading in response to the request from the server A method for disabling data reading of the terminal according to claim 1, comprising: 9. The P-terminal continuously makes the request for disabling the data reading until the data reading becomes impossible or until a set number of repetitions is reached. The method for making the data read of the terminal described in any one of 1. 10. The server according to claim 8, wherein the request for disabling the data read is continuously made until the data read becomes impossible or the set number of repetitions is reached. The method of making the data read of the terminal described in 1. 11. The P terminal makes a request for disabling data read different from the request for making the previous data read impossible according to the remaining power capacity of the K terminal. 11. The method for making data reading of the terminal according to any of 10 above impossible. 12. The server makes a request for disabling data read different from a request for disabling data read last time, according to the remaining capacity of the power supply of the K terminal. 11. The method for making data reading of the terminal according to any of 10 above impossible. 13. A computer program for executing the method according to claim 1. 14. A recording medium on which a computer program for executing the method according to claim 1 is recorded.