JP2014067441A - Communicable information storage medium, and secret information storage system using medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide means capable of confirming personal identification number information set in a credit card or the like with a relatively simple configuration while securing sufficient security at any time and anywhere.SOLUTION: An information storage medium 20 including a personal identification number storage part 25 for storing personal identification numbers of a credit card and a cash card, and a short-range radio communication part 23 for performing short-range radio communication with a cellular phone 10 by RFID, Bluetooth (R), IrDA, or the like is stored in a money bag, or is built in a necklace, a ring, character goods, or the like. When the personal identification number has to be confirmed, the information storage medium 20 is accessed from the cellular phone 10 through short-range communication to read the personal identification number, and the personal identification number is confirmed by displaying the personal identification number on a display part 15 of the cellular phone 10. The personal identification number information stored in the storage part of the cellular phone 10 for display is erased after finishing the confirmation, and the personal identification number information is not left behind as storage in the cellular phone 10.

Description

  The present invention relates to a technology that makes it possible to confirm secret information that is not desired to be known to others, such as a password of a credit card or a cash card, while ensuring security.

  In recent years, the spread of credit cards, cash cards, etc. has been remarkable, and it is possible to purchase products within a certain range without using cash, or to receive various services using cards such as lending money. These cards are set with a password by the user, and the card cannot be used unless the set password is entered to prevent unauthorized use of the card by a third party. In this case, if you set a number that can be easily known by others, such as your date of birth, phone number, or home address, the code number can be easily seen by a third party and the card is lost or stolen. The risk of unauthorized use increases.

  On the other hand, it is possible to prevent a password from being easily seen by a third party by increasing the number of digits of the password or a complicated number or symbol as a security code. The person who forgets the personal identification number set by the person himself may cause a situation in which the card cannot be used. Also, if you have a plurality of cards and set a different PIN for each card, you may not know the correspondence between the card and the PIN.

  For this reason, the memo with the PIN number and the card can be held together, or the card PIN number can be stored in the memory of the mobile terminal such as a mobile phone, and the PIN code can be stored with the memo or the mobile terminal when the card is used. There is a method to check, but if the memo with the PIN number and the card are lost or stolen together, the PIN number is easily known to a third party, and the mobile device is lost or stolen. In such a case, there is a possibility that a third party may steal the password of the card stored in the portable terminal.

  As one means for solving such a problem, in Patent Document 1, the card user's voice data is collated to confirm the identity, and a device for displaying the stored personal identification number is provided. A method for informing a person of a personal identification number has been proposed, and in Patent Document 2, when a card is used, if the personal identification number for the card cannot be remembered or if the personal identification number is uncertain, the sub personal identification number Sub-password information storage means that inputs a sub-password information request using the information output request input means, and that the sub-password information extraction means recognizes the card from the membership number read from the card. Sub-password information that is a hint for remembering the password corresponding to the recognition card is extracted, and the sub-password information output control means How to inform the sub-code number information extracted in the card owner has been proposed.

JP 05-006481 A JP 2001-034723 A

  In the technique described in Patent Document 1, when voice changes due to the physical condition of the card user, voice collation may be inconsistent, which may cause a problem in collation accuracy. Furthermore, there is an inconvenience that such a device cannot be used unless it is installed, and cannot be handled anytime and anywhere.

  Further, in the technique described in Patent Document 2, it is assumed that the user can remember the personal identification number from the sub personal identification number information that serves as a hint for remembering the personal identification number corresponding to the recognition card, and thus can be used as the personal identification number. There is a problem that only numbers having some relation with the user, such as date of birth, address, telephone number, etc., can be used.

  The purpose of the present invention is to secure secret information that is not desired to be known to others, such as a personal identification number arbitrarily set for a credit card or cash card, etc., with a relatively simple configuration, and sufficient security anytime and anywhere. It is to provide a means that can be confirmed while.

  A system for storing and managing secret information such as a personal identification number according to the first embodiment of the present invention includes a secret information storage unit that stores secret information set by a user, and an information storage medium including a short-range wireless communication unit A wireless communication unit that performs wireless communication with a base station, a display unit, and a portable terminal that includes a short-range wireless communication unit capable of performing short-range wireless communication with the information storage medium. The information storage medium is configured to receive secret information transmitted from the portable terminal by the short-range wireless communication and store the secret information in the secret information storage unit, and from the portable terminal by the short-range wireless communication. When receiving an inquiry for secret information, it has a function of reading out secret information stored in the secret information storage unit and transmitting it to the portable terminal by the short-range wireless communication, The mobile terminal transmits the secret information to the information storage medium by the short-range wireless communication, and erases the secret information stored in the storage unit in the terminal for transmission processing of the secret information after transmission is completed. A function for transmitting an inquiry for the secret information to the information storage medium by the short-range wireless communication when receiving a confirmation instruction for the secret information, and a function for transmitting the secret information from the information storage medium by the short-range wireless communication. It has a function of receiving the transmitted secret information and displaying it on the display unit, and a function of deleting the secret information stored in the storage unit in the terminal for the display process after the display is completed. It is characterized by.

  The information storage medium used in the secret information storage system of the present embodiment has a function of receiving secret information transmitted from the portable terminal by the short-range wireless communication and storing the secret information in the secret information storage unit including a flash memory or the like A function of reading the secret information stored in the secret information storage unit and transmitting the secret information to the portable terminal by the short-range wireless communication when receiving the inquiry of the secret information from the portable terminal by the short-range wireless communication. It is configured as a single unit.

  In addition, the information storage medium can be carried along with a credit card or the like in an appropriate article other than the portable terminal possessed by the portable terminal holder, for example, a bag or a wallet. It can be realized in an appropriate form such as being incorporated into a necklace, a wristwatch, a ring, or a character goods worn by a person.

  Further, the portable terminal used in the secret information storage system of the present embodiment is configured integrally with, for example, a mobile phone, and transmits the secret information to the information storage medium by the short-range wireless communication, and the transmission of the secret information. A function of erasing the secret information stored in the storage unit in the terminal for processing after the transmission is completed, and the information storage medium by the short-range wireless communication when receiving an instruction to confirm the secret information A function for transmitting an inquiry for secret information, a function for receiving the secret information transmitted by the short-range wireless communication from the information storage medium and displaying the secret information on the display unit, and a terminal for the display process after the display ends A function of deleting the secret information stored in the storage unit can be added to the mobile phone.

  A secret information storage system according to a second embodiment of the present invention includes a secret information storage unit that stores secret information, a wireless communication unit that performs wireless communication with a base station, and a short-range wireless communication unit. A mobile device including a wireless communication unit that performs wireless communication between a storage medium and a base station, a display unit, and a short-range wireless communication unit that can perform short-range wireless communication between the information storage medium The information storage medium is configured to receive secret information transmitted from the portable terminal by the short-range wireless communication and store the secret information in the secret information storage unit, and to carry the portable information by the short-range wireless communication. A function of reading out the secret information stored in the secret information storage unit and transmitting it to the portable terminal by the short-range wireless communication when receiving the inquiry of the secret information from the terminal; Having a function of erasing the secret information stored in the secret information storage unit when receiving an instruction to delete the secret information stored in the secret information storage unit from the portable terminal by wireless communication The portable terminal transmits the secret information set by the user to the information storage medium by the short-range wireless communication, and transmits the secret information stored in the terminal storage unit for the transmission process. A function of erasing after completion, a function of transmitting an inquiry of the secret information to the information storage medium by the short-range wireless communication when receiving a confirmation instruction of the secret information, and a short distance from the information storage medium A function of receiving the secret information transmitted by wireless communication and displaying it on the display unit; and the secret information stored in the terminal storage unit for display processing after the display is completed. And a secret stored in the secret information storage unit with respect to the information storage medium by wireless communication via the base station when receiving an instruction to delete the secret information stored in the information storage medium It has a function of transmitting a signal instructing to erase information.

  The information storage medium used in the secret information storage system of the present embodiment has a function of receiving secret information transmitted from the portable terminal by the short-range wireless communication and storing the secret information in the secret information storage unit including a flash memory or the like A function of reading out the secret information stored in the secret information storage unit and transmitting the secret information to the portable terminal by the short-range wireless communication when receiving the inquiry of the secret information from the portable terminal by the short-range wireless communication; A function of erasing the secret information stored in the secret information storage unit when receiving an instruction to delete the secret information stored in the secret information storage unit from the portable terminal by wireless communication via the base station It is configured as a single body having

  As in the first embodiment, this information storage medium is put together with a credit card or the like in an appropriate article other than the portable terminal possessed by the portable terminal holder, such as a bag or a wallet. It can be carried around, or can be realized in an appropriate form such as being incorporated into a necklace, a wristwatch, a ring, or a character goods worn by the portable terminal holder.

  The portable terminal used in the secret information storage system of the present embodiment is configured integrally with, for example, a mobile phone, and transmits the secret information set by a user to the information storage medium by the short-range wireless communication; A function of erasing the secret information stored in the in-terminal storage unit for the transmission processing after the transmission is completed, and the information storage medium by the short-range wireless communication when receiving a confirmation instruction of the secret information A function for transmitting an inquiry for the secret information, a function for receiving the secret information transmitted from the information storage medium by the short-range wireless communication and displaying the secret information on the display unit, and a display process after the display is completed. A function of erasing the secret information stored in the in-terminal storage unit, and when receiving an instruction to erase the secret information stored in the information storage medium, It can be configured by adding a function of transmitting a signal for instructing erasing of confidential information by the line communication has been stored in the secret information storage unit to the information storage medium in the portable telephone.

  Further, the secret information confirming method according to the first embodiment of the present invention is a method for transmitting the secret information stored in the information storage medium to the portable terminal by short-range wireless communication and displaying it on the display unit of the portable terminal. An information storage medium receives secret information transmitted from a portable terminal by short-range wireless communication and stores it in a secret information storage unit in the information storage medium, and stores the secret information from the portable terminal by the short-range wireless communication. When the inquiry is received, the secret information stored in the secret information storage unit is read out and transmitted to the portable terminal by the short-range wireless communication, and the portable terminal receives the secret information set by the user. Transmit to the information storage medium by distance wireless communication, delete the secret information stored in the terminal storage unit for the transmission process after transmission is completed, and confirm the secret information When receiving an indication, the inquiry of the secret information is transmitted to the information storage medium by the short-range wireless communication, and the secret information transmitted by the short-range wireless communication is received from the information storage medium, The secret information is displayed on the display unit, and the secret information stored in the in-terminal storage unit is deleted for the display process after the display is completed.

  Further, the secret information confirmation method according to the second embodiment of the present invention is a method for transmitting the secret information stored in the information storage medium to the portable terminal by short-range wireless communication and displaying it on the display unit of the portable terminal. An information storage medium receives secret information transmitted from a portable terminal by short-range wireless communication and stores it in a secret information storage unit in the information storage medium, and stores the secret information from the portable terminal by the short-range wireless communication. When the inquiry is received, the secret information stored in the secret information storage unit is read out and transmitted to the portable terminal by the short-range wireless communication, and the secret information storage unit is transmitted from the portable terminal by wireless communication via a base station. When receiving an instruction to delete the secret information stored in the secret information, the secret information stored in the secret information storage unit is deleted, and the portable terminal is set by the user. The secret information is transmitted to the information storage medium by the short-range wireless communication, and the secret information stored in the storage unit in the terminal for the transmission process is deleted after the transmission is completed, and the confirmation instruction of the secret information is performed. When receiving the confidential information inquiry to the information storage medium by the short-range wireless communication, receiving the secret information transmitted by the short-range wireless communication from the information storage medium and displaying the display And when deleting the secret information stored in the terminal storage unit for the display processing after the display is completed and receiving an instruction to delete the secret information stored in the information storage medium, A signal instructing erasure of secret information stored in the secret information storage unit is transmitted to the information storage medium by wireless communication via a base station.

  In the present invention, short-range wireless communication between a secret information storage unit that stores secret information that is not desired to be known to others, such as an arbitrarily set credit card or cash card PIN, and a mobile terminal such as a mobile phone Can be stored in a wallet that the user always wears, or incorporated into a necklace, ring, character goods, etc. When it is necessary to confirm the number, the personal identification number is confirmed by accessing the information storage medium from the portable terminal using the short-range wireless communication function, and the above secret information is not stored in the portable terminal. Therefore, even if the mobile terminal is lost or stolen, there is no risk of confidential information leaking to others, and even if the information storage medium is lost, the third party It is difficult to recognize that the storage medium of confidential information, and so do not know the access method to it, the secret information in the information storage medium is a risk that leaking to others little.

  Further, by providing a wireless communication unit that performs wireless communication with the base station in the information storage medium, when the information storage medium is lost, the information lost by the wireless communication from the portable terminal via the base station Since the secret information stored in the storage medium can be erased, security can be further enhanced.

It is a block block diagram which shows the 1st Embodiment of this invention. It is a flowchart for demonstrating operation | movement of this embodiment. It is a flowchart for demonstrating operation | movement of this embodiment. It is a block block diagram which shows the 2nd Embodiment of this invention. It is a flowchart for demonstrating the information erasure | elimination operation | movement in 2nd Embodiment.

  FIG. 1 is a block diagram showing a first embodiment of the present invention, in which a portable terminal 10 such as a cellular phone and a personal identification number such as a credit card or a cash card are stored and close to the portable terminal 10. The information storage medium 20 has a function capable of distance wireless communication.

  The mobile terminal 10 includes a radio communication unit 11 that performs radio communication with a public radio base station, an RFID (Radio Frequency Identification), Bluetooth (registered trademark), an IrDA (Infrared Data Association), and the like with the information storage medium 20. Short-distance wireless communication unit 13 for performing short-distance wireless communication, and terminal unique number storage unit for storing each terminal unique number used for recognizing each other when performing short-distance wireless communication with information storage medium 20 14, a display unit 15 including a display for displaying character information, symbols, image information, and the like, an operation unit 16 including a keyboard for performing various operations such as dialing, mail creation, and memory editing, and the mobile terminal 10 A control unit 12 that executes a program for controlling various devices mounted is provided.

  Although not shown in FIG. 1, the mobile terminal 10 has a battery as a power source, and when the mobile terminal 10 is configured as a mobile phone, call means, incoming call notification means, etc. required for telephone communication, etc. Includes various configurations. The control unit 12 also includes a CPU and various memories such as a ROM, a RAM, and a non-volatile memory (flash memory, etc.). The CPU in the control unit 12 stores the data in the ROM and the non-volatile memory. The operation of each part of the portable terminal 10 is controlled by executing the control program, and the RAM is used as a work area for temporarily storing various data used when the CPU executes various programs. The terminal unique number storage unit 14 may assign a predetermined address in the ROM in the control unit 12 or the nonvolatile memory.

  The information storage medium 20 is connected to the short-range wireless communication unit 23 that performs short-range wireless communication with the mobile terminal 10 using RFID, Bluetooth, IrDA, or the like. A terminal unique number storage unit 24 for storing each terminal unique number used for recognizing the terminal, a non-volatile memory such as a flash memory for storing a password such as a credit card or a cash card received from the portable terminal 10 by short-range wireless communication The personal identification number storage unit 25 composed of the memory, the terminal unique number received from the portable terminal 10 when performing short-range wireless communication with the portable terminal 10 and the terminal unique number stored in the terminal unique number storage unit 24 are collated An authentication unit 21 that determines whether access is valid, and a program for controlling various devices mounted in the information storage medium 20 And a control unit 22 to execute.

  The information storage medium 20 also includes a battery as a power source. Similarly to the control unit 12, the control unit 22 includes a CPU, a ROM, a RAM, a nonvolatile memory such as a flash memory, and the like. The CPU in the control unit 22 controls the operation of each unit of the information storage medium 20 by executing a control program stored in the ROM or nonvolatile memory. The terminal unique number storage unit 24 and the personal identification number storage unit 25 may be assigned a predetermined address in the ROM or the nonvolatile memory in the control unit 22.

  This information storage medium 20 can be configured with an image of a flash memory capable of short-range wireless communication. It is configured with priority on miniaturization and can be stored in a wallet that the user always wears, or it can be incorporated into a necklace, ring, character goods, etc. However, an operation unit, a display unit, and the like are not provided, but a display unit such as an LED that can confirm communication with the mobile terminal 10 can be provided as a user-friendly function.

  FIG. 2 is a flowchart for explaining the operation of transmitting the personal identification number set by the user in the present embodiment from the portable terminal 10 to the information storage medium 20 and storing it in the personal identification number storage unit 25. FIG. 4 is a flowchart for explaining an operation in which the terminal 10 reads and displays a password stored in a password storage unit 25 of the information storage medium 20.

  In the initial setting before the password number storing operation shown in FIG. 2 is performed, the terminal unique number (such as IMEI) of the mobile terminal 10 is stored in advance in the terminal number storage unit 24 of the information storage medium 20. The method for storing the terminal unique number of the portable terminal 10 in the terminal number storage unit 24 of the information storage medium 20 is, for example, by setting an initial setting mode or a terminal unique number update mode between the portable terminal 10 and the information storage medium 20. This can be realized by a method of transmitting the terminal unique number of the portable terminal 10 from the portable terminal 10 to the information storage medium 20 by the short-range wireless communication means and storing it in the terminal number storage unit 24.

  Further, as a method of erasing the terminal unique number information stored in the terminal number storage unit 24 of the information storage medium 20, for example, an initialization switch disposed behind a narrow hole provided in the information storage medium 20, It is also possible to use a method of erasing stored information by inserting a thin bar or the like and pressing it for a predetermined time. When the terminal unique number stored in the terminal number storage unit 24 is updated, or when the terminal unique number is deleted by the initialization switch, the stored contents of the personal identification number storage unit 25 are automatically deleted. Is set to

  Next, a password number storing operation to the information storage medium 20 and a password number reading operation from the information storage medium 20 in the present embodiment will be described with reference to FIGS.

  When the user stores a password such as a credit card or a cash card in the information storage medium 20, updates the password, or additionally stores a new password, the user first stores the password from the operation unit 16 of the mobile terminal 10. When the personal identification number information consisting of a preset pattern such as a credit card or cash card to be updated or additionally stored is input, the control unit 12 stores the input personal identification number information in a predetermined storage in the portable terminal 10. The data is stored in an area (for example, a predetermined storage area of RAM in the control unit 12) (S11).

  Next, in order to store the personal identification number information in the information storage medium 20, when the operation unit 16 instructs execution of short-range wireless communication, the control unit 12 transmits the terminal specific number of the terminal itself from the terminal specific number storage unit 14. And short-range wireless communication unit 13 is controlled to perform short-range wireless communication with information storage medium 20 according to a predetermined procedure, and the read-out terminal unique number is transmitted to store the personal identification number. Wireless communication is established (S12). After the short-distance wireless communication for storing the code number is established with the information storage medium 20, the control unit 12 reads the code number information stored in the predetermined storage area, and reads the code The number information is transmitted to the information storage medium 20 via the short-range wireless communication unit 13 (S13).

  When the short-range wireless communication unit 23 of the information storage medium 20 receives the personal identification number information transmitted from the portable terminal 10 by the short-range wireless communication, the control unit 22 of the information storage medium 20 receives the personal identification number of the predetermined pattern. The information is stored in the personal identification number storage unit 25 (S14), and after completion of the storage, a signal indicating that the reception and storage of the personal identification number is completed is transmitted to the portable terminal 10 via the short-range wireless communication unit 23 ( S15). The control unit 12 of the portable terminal 10 receives a signal indicating that the password has been received and stored from the information storage medium 20, and then performs short-range wireless communication with the information storage medium 20 to store the password. The communication is disconnected (S16), and then the personal identification number information stored in the predetermined storage area in the portable terminal 10 is deleted (S17).

  When the mobile terminal 10 receives a signal indicating that the password has been received and stored from the information storage medium 20, information indicating that the password has been stored is displayed on the display unit 15 of the mobile terminal 10. Means for notifying the user by display or acoustic display by a speaker or the like may be provided.

  In addition, the control unit 22 of the information storage medium 20 sends a signal prompting re-transmission of the personal identification number information if the personal identification number information is not valid, such as when the received personal identification number information is not in a predetermined pattern. When the mobile terminal 10 is transmitted to the mobile terminal 10 via the distance wireless communication unit 23 and displayed on the display unit of the mobile terminal 10 and a re-transmission request for the personal identification number information is received, the mobile terminal 10 is disconnected without disconnecting the short-range wireless communication. A means for transmitting the correct PIN information to the information storage medium 20 via the short-range wireless communication unit 13 may be added.

  Next, when the user confirms a personal identification number such as a credit card or a cash card stored in the information storage medium 20, the user inputs the personal identification number information stored in the information storage medium 20 from the operation unit 16. Instructs execution of near field communication for reading. In response to this instruction, the control unit 12 controls the short-range wireless communication unit 13 to establish short-range wireless communication for confirming the personal identification number with the information storage medium 20. The terminal unique number information and the personal identification number transmission request signal stored in the terminal unique number storage unit 14 are transmitted to the information storage medium 20.

  The authentication unit 21 of the information storage medium 20 collates the terminal unique number received from the mobile terminal 10 with the terminal unique number stored in the terminal unique number storage unit 24. The control unit 22 notifies the mobile terminal 10 through the short-range wireless communication unit 23 that the short-range wireless communication cannot be established due to unauthorized access.

  As a result of collating the terminal unique number received from the portable terminal 10 with the terminal unique number stored in the terminal unique number storage unit 24, it is determined that the access is correct and the information storage medium 20 The control unit 22 notifies the mobile terminal 10 via the short-range wireless communication unit 23, thereby establishing short-range wireless communication for confirming the password between the mobile terminal 10 and the information storage medium 20. (S21).

  After the short-range wireless communication for confirming the personal identification number is established with the portable terminal 10, the control unit 22 of the information storage medium 20 reads the personal identification number information stored in the personal identification number storage unit 25, The read personal identification number information is transmitted to the portable terminal 10 via the short-range wireless communication unit 23 (S22).

  When the short-range wireless communication unit 13 of the mobile terminal 10 receives the password information transmitted from the information storage medium 20 by the short-range wireless communication, the control unit 12 of the mobile terminal 10 uses the received password information to the control unit. 12 is stored in a predetermined storage unit 12 (S23), and after reception of the PIN information is completed, the near field communication established with the information storage medium 20 is disconnected (S24).

  Next, the control unit 12 of the portable terminal 10 reads out the personal identification number information stored in the predetermined storage unit in the control unit 12 and displays it on the display unit 15 of the portable terminal 10 (S25). When the user confirms the displayed personal identification number information and then performs a confirmation completion (display end) operation, the control unit 12 terminates the display of the personal identification number information and stores it in the predetermined storage unit for display. The secret code number information is deleted (S26).

  According to the present embodiment, the personal identification number can be confirmed by accessing the information storage medium 20 from the mobile terminal 10 by short-range communication only when the personal identification number needs to be confirmed. Since the information is not stored as a memory, even if the mobile terminal 10 is lost or stolen, there is no risk that the personal identification number information will be leaked to others, and even if the information storage medium 20 is lost, It is difficult for the three parties to recognize what they are, and since there is no way of knowing how to access them, there is almost no possibility that the password information will be leaked from this information storage medium.

  FIG. 4 is a block diagram showing the second embodiment of the present invention. In the present embodiment, a wireless communication unit that performs wireless communication with the base station is added to the information storage medium, and the information storage medium is called from the portable terminal via the base station and stored in the personal identification number storage unit of the information storage medium. By providing means for remotely erasing the security code information, the security code information is stored in a third party even if the security code storage unit of the information storage medium is accessed in some way when the information storage medium is lost. It is characterized by a further increase in security.

  In FIG. 4, the portable terminal 30 is connected to the wireless communication unit 31 that performs wireless communication with the public wireless base station 50 and the information storage medium 40 using RFID, Bluetooth, IrDA, or the like, as in the first embodiment. From a short-range wireless communication unit 33 that performs short-range wireless communication, a display unit 35 that includes a display that displays character information, symbols, image information, and the like, a keyboard for performing various operations such as dialing, mail creation, and memory editing The operation unit 36 is provided. The terminal unique number storage unit 34 stores each terminal unique number used to recognize each other when performing short-range wireless communication with the information storage medium 40 and wireless communication via the public wireless base station 50. The control unit 32 executes a program for controlling operations of various devices mounted in the mobile terminal 30 as in the first embodiment.

  The information storage medium 40 includes a short-range wireless communication unit 43 that performs short-range wireless communication with the portable terminal 30 using RFID, Bluetooth, IrDA, or the like, and a credit card or cash card received from the portable terminal 30 through the short-range wireless communication. However, the information storage medium 40 of the present embodiment further includes a public radio base station in that it includes a personal identification number storage unit 45 composed of a flash memory or the like that stores a personal identification number. The wireless communication unit 46 that performs wireless communication with the mobile phone 50, a response message that responds to a call from the mobile terminal 30, and a notification that the personal identification number stored in the personal identification number storage unit 45 has been deleted. A message storage unit 47 for storing messages is provided.

  The terminal unique number storage unit 44 stores each terminal unique number used to recognize each other when performing short-range wireless communication with the mobile terminal 30 and wireless communication via the public wireless base station 50. The authentication unit 41 receives the terminal unique number received from the portable terminal 30 and the terminal when performing wireless communication between the portable terminal 30 and the public radio base station 50 or when performing short-range wireless communication with the portable terminal 30. The terminal unique number stored in the unique number storage unit 44 is checked to determine whether the access is valid. The control unit 42 executes a program for controlling operations of various devices mounted in the information storage medium 40.

  Also in the present embodiment, the password is transmitted from the mobile terminal 30 to the information storage medium 40 and stored in the password storage 44, and the mobile terminal 30 is stored in the password storage 44 of the information storage medium 40. The operation for reading out and displaying the current personal identification number is executed by short-range wireless communication as in the first embodiment. Since the operation is the same as that of the first embodiment shown in the flowcharts of FIGS. 2 to 3, detailed description thereof is omitted here.

  FIG. 5 is a flowchart for explaining an operation of erasing the password number information stored in the password number storage unit 44 of the information storage medium 40 in the present embodiment. Hereinafter, the erase operation of the password information stored in the password storage unit 44 of the information storage medium 40 of the present embodiment will be described with reference to FIGS.

  When the user loses the information storage medium 40 storing the password such as a credit card or a cash card and needs to erase the password stored in the information storage medium 40, The operation unit 36 is instructed to execute wireless communication for deleting the personal identification number information stored in the information storage medium 40. Upon receiving this instruction, the control unit 12 reads the calling number of the information storage medium 40 stored in the terminal unique number storage unit 34 of the portable terminal 30, and registers the calling number via the wireless communication unit 31. When the transmission is made to the wireless base station 50 that has been set (S31), the wireless base station 50 makes a simultaneous call to the wireless base station area using this calling number (S32).

  When the information storage medium 40 responds to the simultaneous call by the wireless communication unit 46, the wireless base station 50 connects the line between the portable terminal 30 and the information storage medium 40, and the message storage unit 47 of the information storage medium 40. Is read and transmitted to the portable terminal 30 (S33). Receiving this response message, the control unit 32 of the portable terminal 30 transmits a command for deleting the password stored in the information storage medium 40 to the information storage medium 40 via the wireless communication unit 31 (S34). ).

  The control unit 42 of the information storage medium 40 that has received the command for erasing the personal identification number executes erasure of all the personal identification number information stored in the personal identification number storage unit 44 (S35), and the erasure is completed. Thereafter, the deletion completion notification message stored in the message storage unit 47 is read out and transmitted to the portable terminal 30 via the wireless communication unit 46 (S36). Upon receiving the erasure completion notification message, the control unit 12 of the mobile terminal 30 executes a connection line disconnection process, and the radio base station 50 releases the line connection between the mobile terminal 30 and the information storage medium 40 in response to this.

  In the above description, for convenience, the mobile terminal 30 and the information storage medium 40 are both registered in the radio base station 50 and communicated via the radio base station 50. However, the mobile terminal 30 is registered in the location. Even if the base station area where the information storage medium 40 is registered and the base station area where the information storage medium 40 is registered are different, the same operation can be performed.

  According to the present embodiment, when the user loses the information storage medium 40 storing the password such as a credit card or a cash card, the password information stored in the information storage medium is remotely deleted. Therefore, even if a third party who picks up the lost information storage medium 40 accesses the personal identification number storage unit of the information storage medium by some method, the personal identification number information cannot be obtained from the information storage medium. As a result, security can be further enhanced.

  In each of the above embodiments, a password such as a credit card or a cash card is targeted. However, the present invention is not limited to the password, and secrets such as personal information that the third party does not want to be known. The present invention can be applied to information that needs to be remembered and used appropriately.

10, 30 Mobile terminal 11, 31, 46 Wireless communication unit 12, 22, 32, 42 Control unit 13, 23, 33, 43 Short-range wireless communication unit 14, 24, 34, 44 Terminal unique number storage unit 15, 35 Display Unit 16, 36 Operation unit 20, 40 Information storage medium 21, 41 Authentication unit 25, 45 PIN code storage unit 47 Message storage unit

Claims (4)

A display unit, a control unit, a storage unit and a short-range wireless communication unit,
The short-range wireless communication unit transmits secret information set by a user to an information storage medium by short-range wireless communication, and receives a signal indicating that reception and storage of the secret information from the information storage medium are completed. ,
When the signal indicating that the reception and storage of the secret information is completed is received, the display unit displays that the reception and storage of the secret information is completed,
The control unit deletes the secret information stored in the storage unit to transmit the secret information to the information storage medium after transmission of the secret information is completed,
The short-range wireless communication unit is
Sending an inquiry for the secret information to the information storage medium by the short-range wireless communication when receiving an instruction to confirm the secret information;
Receiving the secret information transmitted by the short-range wireless communication from the information storage medium;
When the reception of the secret information from the information storage medium is completed, the short-range wireless communication established with the information storage medium is disconnected,
The display unit displays the secret information received from the information storage medium;
The control unit erases the secret information stored in the storage unit for displaying the secret information received from the information storage medium after the display of the secret information received from the information storage medium is completed. To
A portable terminal characterized by that. The wireless communication unit further performs wireless communication with the base station,
The wireless communication unit is stored in the information storage medium with respect to the information storage medium by wireless communication via the base station when receiving an instruction to erase the secret information stored in the information storage medium The portable terminal according to claim 1, wherein a signal instructing erasure of secret information is transmitted. Send the secret information set by the user to the information storage medium by short-range wireless communication,
Receiving from the information storage medium a signal indicating that the reception and storage of the secret information has been completed;
When a signal indicating that the reception and storage of the secret information is completed is received, the reception and storage of the secret information is displayed,
Deleting the secret information stored in the portable terminal for transmitting the secret information to the information storage medium after the transmission of the secret information is completed;
Sending an inquiry for the secret information to the information storage medium by the short-range wireless communication when receiving an instruction to confirm the secret information;
Receiving the secret information transmitted by the short-range wireless communication from the information storage medium;
When the reception of the secret information from the information storage medium is completed, the short-range wireless communication established with the information storage medium is disconnected,
Displaying the secret information received from the information storage medium;
Erasing the secret information stored in the portable terminal for displaying the secret information received from the information storage medium after the display of the secret information received from the information storage medium is completed;
A method for controlling a portable terminal.   When receiving an instruction to delete the secret information stored in the information storage medium, the wireless communication via the base station instructs the information storage medium to delete the secret information stored in the information storage medium. 4. The method of controlling a mobile terminal according to claim 3, wherein a signal is transmitted.

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