JP2002369251A - Portable terminal equipment with unauthorized operation preventing function, and unauthorized operation preventing system for the portable terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide portable terminal equipment, having unauthorized operation preventing function which has a means for preventing unauthorized operation by a third party, for a lost portable terminal equipment becoming impossible to be managed by an owner's will, and to provide an illegal operation preventing system for the portable terminal equipment. SOLUTION: The portable terminal equipment with a temporary storage medium comprises a control means for setting a key pad for operating the lost portable terminal equipment to a locking state through a remote operation to disabled operation, when an access from a previously registered lost portable terminal equipment is detected, if the storage medium is managed by identification information peculiar for the storage medium for storing information; a means for preventing the unauthorized operation due to the third party and further reading information stored at the lost portable terminal equipment side, in response to the access from the registered lost portable terminal equipment; and/or a means for erasing the stored information, thereby preventing the information stored in the lost portable terminal equipment from being abused by the third party.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal device having an illegal operation preventing function capable of preventing illegal use by a third party who does not have the right to use the system, and a system for preventing illegal operation of a portable terminal device.

[0002]

2. Description of the Related Art Portable terminal devices have been reduced in size and weight so that they are easy to carry, and many of them have been put into practical use, such as a two-folded type or a type with a slide cover for protecting a keyboard portion and a display portion. ing. While such miniaturization is becoming more and more advantageous in terms of carrying and possession, the chance of losing it against the will of the owner is also increasing. Further, there is an opportunity to suffer damages such as theft, theft, robbery, etc., and the number of so-called lost portable terminal devices falling into a state where the owner cannot manage them is increasing.

[0003] It is often not easy to once determine the location of a lost portable terminal device that has left the hand of an authorized user. Therefore, the lost portable terminal device may be illegally operated by a third party without proper authority without returning to the original owner.

[0004] In such a case, the authorized user associates the new mobile terminal device with the old telephone number and resets the security information, thereby making it impossible to use the service of the lost mobile terminal device and making the new mobile terminal device unavailable. The portable terminal device resumes the enjoyment of the mobile phone service.

In recent portable terminal devices, many functions can be provided on the terminal side, and a large amount of information can be stored for the convenience of the user when going out or moving. Many have a temporary storage area. In such a case, the owner loses the portable terminal device itself and at the same time loses these stored information.

[0006] On the other hand, the penetration rate of the portable terminal device is extremely high, and since most people are familiar with the operation method of the portable terminal device, even if it is a third party portable terminal device, the stored contents and the like can be reduced. It can be easily displayed and obtained.

[0007] Usually, security between a mobile communication network and a portable terminal device is sufficiently considered. But,
Although security using a personal identification number or the like when the owner uses the portable terminal device is not feasible, operability /
It is said that it is rarely used because sacrificing convenience is undeniable.

[0008] The security between the portable terminal device and the owner is considered to be independent of the mobile communication network side, so that at present, it can only be set by operating the portable terminal device itself. Certainly, it is inconvenient to acquire the right to use a terminal device each time it is used,
After the terminal device has deviated from the owner's control and is in a state of a so-called lost portable terminal device, it is no longer possible to use security even if it is desired.

For this reason, in the lost portable terminal device in which the right to use is set, the portable terminal device of the third party must be used until the owner takes measures to disable the portable terminal device in cooperation with the mobile communication network. It is easy to use the device as your own terminal.
Further, regardless of the presence / absence of such a treatment, it is possible to easily refer to and use information stored in the portable terminal device. Therefore, there is a good possibility that the information stored in the lost portable terminal device will be misused or misused.

[0010] For this reason, it is desired for a lost portable terminal device caused by loss, theft or the like to be able to regulate reading of information from a temporary storage medium. However, since such information reading regulation is a function belonging to the mobile terminal device itself, it is difficult at present to carry out ex post facto externally. Therefore, a means for finally preventing information leakage and unauthorized use by erasing the information is desired.

In particular, when a portable telephone is used as a portable information terminal device, it is conceivable that information management is taken up as a social problem, so self-management regarding information leakage is important together with usability.

[0012]

SUMMARY OF THE INVENTION The present invention is intended to prevent a so-called lost portable terminal device from being illegally operated by a third party, which cannot be managed by the owner's intention due to loss, theft, theft, robbery, etc. An object of the present invention is to provide a portable terminal device having an illegal operation preventing function and a system for preventing an illegal operation of the portable terminal device.

[0013]

Means for Solving the Problems The invention described in claim 1 is:
In a portable terminal device having a temporary storage medium capable of storing desired information, when the temporary storage medium is managed by identification information unique to the storage medium storing the information, the information from the lost portable terminal device registered in advance is used. By providing control means for setting the keypad for operating the lost portable terminal device to a locked state by remote control and making it inoperable when an access is detected, illegal operation by a third party can be prevented. A mobile terminal device with an operation prevention function is characterized.

Further, the invention according to claim 2 is means for reading out information stored in the lost portable terminal device in response to access from the lost portable terminal device registered in advance and / or information stored therein. Means for erasing the
A portable terminal device with an illegal operation prevention function for preventing a situation in which information stored inside a lost portable terminal device is misused by a third party.

In this case, the invention according to claims 3 and 4 is characterized in that the temporary storage area is a storage means built in the portable terminal device or a user identification information module attachable to the portable terminal device. Or any of the following.

According to a fifth aspect of the present invention, there is provided means for registering an information storage medium of a lost portable terminal device in a mobile communication network of a communication carrier providing a service to the portable terminal device, A system for preventing illegal operation of a mobile terminal device, comprising means for restricting access to a storage medium of the mobile terminal device from a third party between the mobile communication network and the mobile terminal device belonging to the mobile communication network. And

Further, the invention according to claim 6 is a communication system for providing a service to a mobile terminal device, wherein a user stores a storage medium of the mobile terminal device belonging to the mobile communication network in a mobile communication network. Means for reading information accumulated by
Alternatively, the invention is characterized in that the system is provided with a system for preventing unauthorized operation of a portable terminal device, which comprises means for performing erasure.

Further, the invention according to claim 7 is characterized in that, before erasing the information stored in the storage medium of the lost portable terminal device, the information is lost directly by a request from the owner or through the intermediary of a communication carrier. A feature is a system for preventing illegal operation of a mobile terminal device, comprising means for reading information temporarily stored in the mobile terminal and transferring the information in response to a user request.

According to an eighth aspect of the present invention, in reading and / or transferring the information, the portable terminal device is provided with a means for classifying and organizing the information and controlling the amount of re-obtained information. It features an operation prevention system.

According to the portable terminal device with an illegal operation preventing function according to the present invention, the operation of the keypad can be locked by remote control to disable the lost portable terminal device that has deviated from the user's control. it can. Therefore, it is possible to avoid a situation in which an enormous usage fee is charged to the original contractor by illegally using the lost portable terminal device obtained illegally due to finding or theft.

Further, according to the portable terminal device with an illegal operation preventing function according to the present invention, the information stored in the temporary storage medium of the lost portable terminal device deviating from the user's control is read out by remote control. A means for erasing is provided.

Therefore, by exhibiting such a function at the stage where the portable terminal device is found to be lost, it is possible to prevent a situation where an unauthorized third party continues to use the portable terminal which has been illegally acquired, and further, it is possible to reduce the accumulated information. Reading or abusing can be prevented beforehand.

[0023]

Embodiments of the present invention will be disclosed below with reference to the accompanying drawings. Hereinafter, a case where the storage area corresponds to the identification information unique to the mobile terminal device will be described as an example.

The management method on the mobile communication network side will be described with reference to the block diagram of FIG. 1 and the signal sequence diagram of FIG.
If you realize that you may have lost your mobile terminal device, use a request from another mobile terminal device or landline phone to disable the keypad operation of your mobile terminal device. To the management center of the mobile communication network to which the subscriber has joined. In the mobile communication network that accepts the request, it is confirmed whether or not the request is made by the owner himself, using a pre-registered password or the like.

If the request is identified as a legitimate request from the owner, a general call is made to the relevant portable terminal device,
If the location is confirmed, an instruction to disable the keypad operation is transmitted to the lost portable terminal device. The portable terminal device that has received this instruction shifts to a keypad operation invalid state (keypad locked state), and thereafter the portable terminal device cannot be used unless the keypad operation invalid state is released by a regular procedure.

When the location of the portable terminal device cannot be confirmed (when communication with the lost portable terminal device cannot be performed), a flag indicating that there is a keypad operation invalidation request in the management information of the portable terminal device (see FIG. Mobile terminal display) and waits for subsequent access from the lost mobile terminal device.

When the access from the lost portable terminal device is detected, the state of the keypad invalidation flag is determined,
If the flag is set, an instruction to disable the keypad operation is sent to the lost portable terminal device, and the keypad lock is realized.

However, it is conceivable that the lost person himself makes an incoming call request to his / her own portable terminal device in order to search for the lost portable terminal device. In preparation for such a situation, the portable terminal device temporarily releases the keypad operation invalid state only at the time of answering the incoming call so that a telephone call can be made. It is assumed that when the use (communication) state at the time of the incoming call ends, the state before the incoming call is restored.

As described above, in the mobile communication network, the information for managing the portable terminal device by the identification information unique to the portable terminal device has a display area for indicating that the portable terminal device is a lost portable terminal device. A procedure for referring to the display area at the time of access is executed.

Further, between the mobile communication network and the portable terminal device, there is a communication procedure of control information relating to a storage area (storage area) where a user can freely store information.

In the above-described realization method, information is protected by disabling the keypad operation, so that the accumulated information of the portable terminal device is held as it is. Therefore, when the lost portable terminal device is returned, the keypad can be restored to the original state by activating the keypad by a normal method. On the other hand, there is a risk that information will be leaked if a third party breaks the password.

Another embodiment shown in the signal sequence diagram of FIG. 3 shows a configuration in which the stored information itself of the portable terminal device is deleted.

It is assumed that the same method as described above is applied to the method of registration with the management center. Here, the subsequent processing is shown for the case where the location of the portable terminal device could not be confirmed at the time of registration.

When the lost portable terminal device is operated by a third party, the portable terminal device accesses the mobile communication network. When the mobile communication network detects an access from the mobile terminal device, the mobile communication network refers to a lost display flag managed for the mobile terminal device and identifies whether or not the mobile terminal device is a lost mobile terminal device.

As a result of the identification, if it is determined that the portable terminal device is a lost portable terminal device, a stored information erasing procedure is started for the portable terminal device to erase the storage in the storage medium. In the signal sequence diagram of FIG. 3 which is another embodiment, reading of stored information before deleting stored information and notification of stored information read after deleting stored information to a designated destination are also shown. It can be added as needed.

When the user uses a new portable terminal device in response to the loss of the portable terminal device, the lost portable terminal device becomes unnecessary and can be excluded from the management target. It is also possible to continue as a management target for a certain period of time in preparation for subsequent rediscovery.

[0037]

The information stored in the portable terminal device cannot be abused unless a third party cannot operate the portable terminal device that has been illegally obtained by being found or stolen. Therefore, if the user has set a procedure for obtaining the right to use the portable terminal device, if the procedure is omitted, by returning it to a state where the procedure is necessary,
As long as the password is not broken, the effect of preventing information leakage can be expected. However, since the information stored in the portable terminal device remains, there is a concern that if the password is broken, the information is misused. In the case of a lost portable terminal device, a malicious third party can obtain information stored in the portable terminal device. Therefore, since the information of the mobile terminal device cannot be managed without deviating from the management of the mobile terminal device owner, there is a risk that the stored information may be misused by a third party. Such a lost portable terminal device is registered in the mobile communication network in response to a request from the legitimate owner of the portable terminal device, and stored information is stored when the lost portable terminal device accesses the mobile communication network thereafter. By erasing the stored information, the misuse of the stored information is achieved. Also,
Prior to erasing the stored information, the stored information can be read from the portable terminal device and distributed to a desired destination using an appropriate means such as an e-mail. By transferring the information to the designated destination in this manner, the information can be restored and obtained without performing the operation of newly obtaining the information stored in the portable terminal device. Therefore, important information, information that is difficult to obtain again, and the like can be easily reused. Since the amount of information stored in the temporary storage medium of the mobile terminal device is expected to be large, the stored information is classified by category so that the information can be read out in detail by category, so that the information can be read again. It is more convenient if the amount of information to be obtained can be reduced in advance.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of a mobile communication network and a mobile terminal device for operating a mobile terminal device with an illegal use prevention function according to the present invention.

FIG. 2 is a signal sequence diagram between a mobile terminal device and a mobile communication network according to an embodiment of the present invention.

FIG. 3 is a signal sequence diagram between a portable terminal device and a mobile communication network according to another embodiment of the present invention.

[Explanation of symbols]

 1 Mobile communication network (management center) 2 Mobile terminal device (mobile phone)

Claims (8)

[Claims] In a portable terminal device provided with a temporary storage medium capable of storing desired information, when the temporary storage medium is managed by identification information unique to the storage medium storing the information, the temporary storage medium is registered in advance. When detecting access from the lost portable terminal device, a keypad for operating the lost portable terminal device is set to a locked state by remote control to disable the operation, thereby preventing illegal operation by a third party. A portable terminal device with an illegal operation prevention function, wherein the function can be prevented. 2. A device for reading information stored in a lost portable terminal device in response to access from a lost portable terminal device registered in advance and / or erasing stored information, The portable terminal device with an illegal operation prevention function according to claim 1, wherein a situation in which information stored inside the portable terminal device is misused by a third party is prevented. 3. The portable terminal device with an illegal operation prevention function according to claim 1, wherein the temporary storage medium is a storage unit built in the portable terminal device. 4. The portable terminal device with an illegal operation prevention function according to claim 1, wherein the temporary storage medium is a user identification information module that can be attached to the portable terminal device. 5. A means for registering the contents of an information storage medium of a lost portable terminal device in a mobile communication network operated by a communication service provider that provides a service to the portable terminal device, the mobile communication network and the mobile communication network. A system for preventing illegal operation of a portable terminal device, comprising means for restricting access to a storage medium of the lost portable terminal device from a third party between the portable terminal device and a portable terminal device belonging to a mobile communication network. . 6. A mobile communication network comprising: means for reading and / or erasing information stored by a user in a storage medium of a portable terminal device belonging to the mobile communication network. The system for preventing unauthorized operation of a portable terminal device according to claim 5. 7. Before erasing information stored in a storage medium of the lost portable terminal device, the lost portable terminal device is requested directly from the original owner of the lost portable terminal device or through the intermediary of a communication carrier. 7. The system for preventing illegal operation of a portable terminal device according to claim 5, further comprising means for reading information temporarily stored in the device and transferring the information in response to a user's request. . 8. The portable terminal according to claim 6, further comprising means for classifying and organizing the information and controlling the amount of reacquired information when reading and / or transferring the information. System for preventing illegal operation of equipment.