JP2007027843A - Portable terminal unit and radio unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal unit and a radio communication unit capable of reliably preventing important information from flowing out and leaking. <P>SOLUTION: The radio communication unit 10, and the portable terminal unit 26 perform radio authentication by respective radio authentication sections 18, 36. While the radio authentication is successful, the important data, such as personal data, can be transmitted and received between the portable terminal unit 26 and the radio communication unit 10. When the radio authentication fails, the personal data stored in a personal data memory 30 of the portable terminal unit 26 are deleted, thus preventing the personal data from flowing out and leaking. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a portable terminal device and a wireless communication unit that performs wireless authentication with the device. In particular, the present invention relates to a technique for preventing leakage and leakage of various important information such as personal data from a portable terminal device.

In recent years, techniques for preventing the leakage of information such as personal information stored in a mobile terminal device such as a mobile phone have been studied. In view of such a situation, when the device leaves the owner or the user due to misplacement or theft, the portable terminal device can disable the device itself and warn that the device has been separated by a certain distance or more. A wireless communication unit and a use restriction device have been proposed (see, for example, Patent Document 1).
Japanese Patent No. 293276

  FIG. 4 is a diagram for explaining the concept of restriction on use of a portable terminal device using conventional wireless authentication. The portion represented by the dotted line indicates a state in which the user existing at the first position P1 wears the wireless communication unit U1 and wirelessly communicates with the mobile terminal device K1 within the first authentication range R1. In this state, wireless authentication between the wireless communication unit U1 and the portable terminal device K1 is established, and predetermined data is exchanged.

  As indicated by the solid line, when the user moves from the first position P1 to the second position P2, the end of the authenticable range moves from the first authentication range R1 to the second authentication range R2. And the portable terminal device K1 will come out of the authenticable range. As a result, wireless authentication is not established. At this time, the wireless communication unit U1 issues an alarm to notify the user that the mobile terminal device K1 is out of the authenticable range.

  FIG. 5 is a block diagram illustrating an overall configuration of a wireless communication authentication system including a mobile terminal device and a wireless unit using wireless authentication. This system includes a wireless communication unit 50 and a mobile terminal device 52 that perform wireless authentication with each other. The wireless communication unit 50 includes a memory 74 that stores an authentication ID (Identification) of the unit itself, an authentication ID of the mobile terminal device, an authentication determination unit 76 that authenticates the mobile terminal device and determines an authentication result, and an antenna A12. A wireless authentication unit 72 including a transmission / reception modulation / demodulation unit 78 that transmits / receives data, and a user notification unit 70 that notifies a user of an authentication result by an alarm or the like. The transmission / reception modulation / demodulation unit 78 includes a modulated wireless transmission unit 82 that transmits data to the portable end device 52 via the antenna A12, and a wireless reception demodulation power detection unit 80 that receives data from the portable end device 52 via the antenna A12. Including.

  The mobile terminal device 52 transmits and receives data via the memory 58 that stores the authentication ID (Identification) of the device itself, the authentication ID of the wireless communication unit, the authentication determination unit 60 that determines the identity authentication, and the antenna A13. A wireless authentication unit 56 including a modem unit 62 and a wireless communication data processing unit 54 that performs data processing through wireless communication with the base station 51 via the antennas A10 and A11. The transmission / reception modulation / demodulation unit 62 includes a modulation radio transmission unit 66 that transmits data to the radio communication unit 50 via the antenna A13, and a radio reception demodulation power detection unit 64 that receives data from the radio communication unit 50 via the antenna A13. Including.

  In this conventional system, the wireless authentication unit 72 of the wireless communication unit 50 and the wireless authentication unit 56 of the portable terminal device 52 have an authentication ID associated in advance, and are mutually paired by wireless communication between the antennas A12 and A13. I grasp that it is 1. The wireless authentication unit 56 of the portable terminal device 52 measures the radio wave intensity of the wireless communication between the antennas A12 and A13, determines the communication distance between the wireless communication unit 50 and the portable terminal device 52, and performs authentication or non-authentication according to the distance. Is determined, and the wireless communication data processing unit 54 of the mobile terminal device 52 and other components are subjected to predetermined use restrictions. The wireless communication data processing unit 54 includes a function of performing data communication with the base station 51 of the mobile terminal device 52 by wireless communication between the antennas A10 and A11.

By the way, important information such as predetermined personal data and personal information, such as an address book, is stored in the wireless communication data processing unit 54 of the portable terminal device 52 and other memory (not shown). Under the above-described wireless authentication, unless the user who carries the wireless communication unit 50 is within a predetermined authentication distance from the mobile terminal device 50, the use of the mobile terminal device 50 is restricted. Under such usage restrictions, it becomes difficult for a third party to easily access the important information stored in the mobile terminal device 52 described above, and the important information can be protected.
Japanese Patent No. 293276

  However, since the information is stored in the portable terminal device 52 only, the third party can perform the operation such as dismantling the portable terminal device 52 to forcibly release the use restriction and directly read the storage memory. Will be able to read the stored information. The leakage and leakage of important information, especially personal data, due to such third party fraud is a serious problem.

  Also, personal information such as an address book is held in a network server by wireless communication via the antennas A10 and A11, downloaded as necessary, uploaded to the server if there is an update, and the mobile terminal device 52 is not authenticated. A method for deleting personal data from the mobile terminal device 52 when the mobile terminal device 52 is reached has been proposed. However, this method has the inconvenience that the personal information cannot be used unless the mobile terminal device 52 is always within the communication range of the base station 52.

  The present invention relates to a portable terminal device capable of performing information management by passing predetermined information from a wireless communication unit to a portable terminal device only when authentication is confirmed under wireless authentication, and preventing leakage, leakage, etc. of important information Provide a wireless communication unit.

  The portable terminal device of the present invention is a portable terminal device that performs wireless authentication with a wireless communication unit and can be used while wireless authentication is successful, and can store important data and a wireless authentication unit that performs wireless authentication An important data memory, a data communication unit for transmitting / receiving important data to / from the wireless communication unit, and erasing important data stored in the data memory when wireless authentication by the wireless authentication unit is unsuccessful A data management unit.

  With this configuration, even if the mobile terminal device is lost, important data is erased from the mobile terminal device due to unsuccessful wireless authentication, preventing leakage or leakage of important data by a third party. be able to.

  The data management unit can be configured to acquire important data from the wireless unit from the data communication unit and store it in the data memory while wireless authentication by the wireless authentication unit is successful. .

  With this configuration, when wireless authentication is unsuccessful, such as when the mobile terminal device is lost, important data is not captured by the mobile terminal device, so that important data can be more reliably prevented from being leaked or leaked. it can.

  In addition, an operation unit for changing important data stored in the data memory is provided in the mobile terminal device, and when the important data is changed by the operation unit, the data management unit is changed from the data communication unit. It is also possible to adopt a configuration in which important data is transmitted to the wireless communication unit.

  With this configuration, it is possible to automatically update important data on the wireless communication unit side, and the convenience of data handling is increased.

  Further, the power supply to the data communication unit and the data memory may be stopped while the wireless authentication by the wireless authentication unit is unsuccessful.

  With this configuration, the power supply life of the mobile terminal device can be extended.

  Although there are various types of important data, the present invention is effective in protecting personal data that is easily abused by a third party.

  Furthermore, a wireless communication unit of the present invention is a wireless communication unit that performs wireless authentication with a mobile terminal device and enables the mobile terminal device to be used while wireless authentication is successful, and a wireless authentication unit that performs wireless authentication A data memory for storing important data, a data communication unit for transmitting / receiving important data to / from the portable terminal device, and when the wireless authentication by the wireless authentication unit is successful, the portable communication device from the data communication unit And a data management unit for transmitting important data stored in the data memory.

  With this configuration, important data is not sent to the mobile terminal device when wireless authentication is unsuccessful, such as when the mobile terminal device is lost, so that important data can be more reliably prevented from leaking or leaking. .

  The wireless communication unit may be configured so that reading of important data from the data memory is restricted while wireless authentication by the wireless authentication unit is unsuccessful.

  With this configuration, even if a situation occurs in which the wireless communication unit is lost, important data can be prevented from being leaked or leaked.

  Furthermore, the present invention provides a wireless communication authentication system comprising a wireless communication unit and a portable terminal device that performs wireless authentication with the wireless communication unit. In the system, while the wireless authentication is successful, Important data can be transmitted and received between the terminal device and the wireless communication unit. When wireless authentication is unsuccessful, no important data is left in the portable terminal device.

  According to the present invention, it is possible to reduce the situation in which important data remains in the mobile terminal device in a state where the user cannot be managed. Therefore, it can be effective in preventing leakage and leakage of important data.

  Hereinafter, a wireless communication authentication system including a mobile terminal device and a wireless communication unit according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram of a wireless communication authentication system including the mobile terminal device 26 and the wireless communication unit 10 according to the present embodiment. The mobile terminal device 26 is composed of a mobile electronic device such as a mobile phone or a PDA (Personal Digital Assistant). On the other hand, the wireless communication unit 10 is generally configured in the form of a key, a key holder, a badge, a card, or the like that the user always wears, but the form is not particularly limited. In this system, the wireless authentication is performed between the mobile terminal device 26 and the wireless communication unit 10, and the use restriction of the mobile terminal device 10 is released and can be used only while the wireless authentication is successful. When the wireless authentication is interrupted, the mobile terminal device 10 is restricted in use, and some or all of the functions become unusable.

  The wireless communication unit 10 includes a personal data memory (data memory) 12, a short-range wireless communication modulation / demodulation unit (data communication unit) 14, a personal data management unit (data management unit) 16, and a wireless authentication unit 18. The wireless authentication unit 18 includes a memory 20 that stores and manages information for authenticating an individual through wireless communication, an authentication determination unit 22, and a transmission / reception modulation / demodulation unit 24. The memory 20 stores authentication information such as an authentication ID (Identification) of the wireless communication unit itself and an authentication ID of the mobile terminal device 26. The authentication information in the memory 20 is input to the transmission / reception modulation / demodulation unit 24 and wirelessly communicated via the antenna A3. The authentication determination unit 22 authenticates a signal transmitted / received from the transmission / reception modulation / demodulation unit 24 via the antenna A3 based on the authentication information in the memory 20, and executes a process of determining whether the authentication is successful.

  If the authentication is successful as determined by the authentication determination unit 22, the personal data management unit 16 is notified of the authentication. The personal data management unit 16 manages personal data stored in the personal data memory 12 based on the result of wireless authentication. For example, the personal data memory 12 is instructed to transmit personal data in the personal data memory 12 to the mobile terminal device 12, receive personal data from the mobile terminal device 26, or update the personal data.

  Personal data is data that already describes information (personal information) that can identify a specific individual. The personal data includes not only information that can identify an individual by itself but also information that can identify an individual by collating with other information, although the information alone cannot identify an individual.

  Personal data includes not only address, name, age, gender, date of birth, phone number, but also nationality, race, permanent affiliation, workplace, occupation, position, academic background, employment history, marriage history, turnover history, bank, Credit card number etc. are included. In recent years, with the advancement of information technology, such leakage, leakage and misuse of personal data has become a major problem.

  The personal data in the personal data memory 12 is modulated as transmission data by the short-range wireless communication modulation / demodulation unit 14, transmitted via the antenna A1, and transmitted to the portable terminal device 26 via the antenna A2. The personal data transmitted from the portable terminal device 26 via the antenna A2 is received via the antenna A1 and demodulated as received data by the short-range wireless communication modem unit 14.

  On the other hand, the mobile terminal device 26 includes an antenna A2, a short-range wireless communication modulation / demodulation unit (data communication unit) 28, a personal data memory (data memory) 30, a personal data management unit (data management unit) 34, and data control. Unit 32, operation display unit (operation unit and display unit) 38, call communication unit 40, antenna A4, and wireless authentication unit 36. The wireless authentication unit 36 includes a memory 46, an authentication determination unit 44, and a transmission / reception modulation / demodulation unit 42. The memory 46 stores authentication information such as an authentication ID of the mobile terminal device itself and an authentication ID of the wireless communication unit 10. The authentication information in the memory 46 is input to the transmission / reception modulation / demodulation unit 42 and wirelessly communicated via the antenna A4. The authentication determination unit 44 authenticates a signal transmitted / received from the transmission / reception modulation / demodulation unit 42 via the antenna A4 based on the authentication information in the memory 46, and executes a process of determining whether the authentication is successful.

  If the authentication is successful, the personal data management unit 34 is notified that the authentication has been successful. The personal data management unit 34 manages personal data stored in the personal data memory 30 based on the result of the wireless authentication. For example, the personal data memory 30 is instructed to transmit personal data in the personal data memory 30 to the wireless communication unit 10, receive personal data from the wireless communication unit 10, or update the personal data. Further, when the wireless authentication is unsuccessful (non-authentication), the personal data management unit 34 erases the personal data in the personal data memory 30 by outputting a data erasure instruction to the personal data memory 30. . The data content in the personal data memory 30 is a copy of the data in the personal data memory 12 of the wireless communication unit 10 as master data, and is updated or deleted based on an instruction from the personal data management unit 34. In updating and erasing personal data, it is not necessary to target all data in the memory, and only a part of the data may be updated or erased.

  The personal data in the personal data memory 30 is modulated as transmission data by the short-range wireless communication modulation / demodulation unit 28, transmitted via the antenna A2, and transmitted to the wireless communication unit 10 via the antenna A1. The personal data transmitted from the wireless communication unit 10 via the antenna A1 is received via the antenna A2, and demodulated as received data by the short-range wireless communication modulation / demodulation unit 28.

  The personal data stored in the personal data memory 30 is displayed on the operation display unit 38 constituted by a display device such as an LCD under the control of the data control unit 32. Further, the call communication unit 40 includes a wireless circuit, a matching circuit, a microphone, and the like that function in communication with other portable terminal devices under the control of the data control unit 32.

  Various communication methods are used for the wireless communication of the short-range wireless communication modulation / demodulation unit 14 and the short-range wireless communication modulation / demodulation unit 28 described above. In this embodiment, UWB (Ultra Wide Band) is used. Since UWB can transmit and receive large volumes of data instantaneously, there is little risk of eavesdropping by a third party. Furthermore, there is little risk of collision and interference with communication between other terminal devices and communication units. For example, when transferring an information amount of about 1 Mbit (megabit) at a data transfer rate of 1 Gbps (gigabit / second) under the UWB system, the usage time of the wireless line is about 1 ms (millisecond), so The possibility of time collision with other communications is very small. Further, as a communication method between the antennas A1 and A2, a wireless local area network (LAN), IrDA (Infrared Data Association), Bluetooth, or the like can be adopted. It is not limited. The communication method between the antennas A1 and A2 is different from the communication method between the antennas A3 and A4.

  The wireless communication unit 10 and the portable terminal device 26 are provided with personal data management units 16 and 34 and personal data memories 12 and 30, respectively. The personal data held in the personal data memory 12 of the wireless communication unit 10 is semipermanently stored as original data (managed as master data). When authentication between the wireless authentication unit 18 and the wireless authentication unit 36 is successful by wireless authentication via the antennas A3 and A4, personal data is transmitted and received via the antennas A1 and A2. When no personal data is held in the personal data memory 30 of the portable terminal device 26, the personal data as the master data of the personal data memory 12 is obtained by wireless communication via the antennas A1 and A2, and the personal data of the portable terminal device 26 is stored. Download to the memory 30 as copy data. When the wireless authentication between the wireless authentication units 18 and 36 is unsuccessful, the wireless communication unit 10 and the portable terminal device 26 are switched to the power saving mode, and the short-range wireless communication modems 14 and 28 and the personal data memory The power supply to 12, 28 may be stopped. With such a configuration, the ionization life of the mobile terminal device 26 can be extended.

  The personal data memory 30 of the portable terminal device 26 is changed or updated by an operation via a user operation display unit (an operation unit composed of various keys, dials, buttons, touch panels, etc.) 38. It is normal. Therefore, when a data change is caused by such an operation, the changed content is transmitted to the personal data memory 12 of the wireless communication unit 10 and the personal data as the master data in the personal data memory 12 is updated. In addition, when the authentication between the wireless communication unit 10 and the portable terminal device 26 is expired (when authentication is unsuccessful), the personal data management unit 34 automatically deletes the copy data that is the content of the personal data memory 30. To do. Furthermore, the setting is such that reading of personal data from the personal data memory 12 is restricted.

  If the wireless communication unit 10 and the mobile terminal device 26 are separated from each other by a predetermined distance or more and the wireless authentication via the antennas A3 and A4 is unsuccessful, such as when the mobile terminal device 26 is left behind, the personal data management unit 34 The personal data stored in the personal data memory 30 is erased. Accordingly, even if the user forgets to carry the mobile phone, no data is stored in the apparatus, so that there is no possibility that personal data is taken out by a third party and leaked or leaked.

  In addition, since personal information data is always worn as a key that is a form of the wireless communication unit 10, it can be managed with more peace of mind than in a base station server or mobile terminal device body. it can. Even if only the wireless communication unit 10 is stolen or lost, personal authentication by wireless authentication between the wireless communication unit 10 and the mobile terminal device 26 is not established, and thus personal data of the wireless communication unit 10 is not established. Reading of data in the memory 12 is restricted, and master data cannot be easily read.

  FIG. 2 is a state transition diagram illustrating event transitions in a state in which the wireless communication unit 10 and the mobile terminal device 26 are separated from each other and in a state in which they approach each other in the wireless communication authentication system of the present invention. As shown in FIG. 2A, when the mobile terminal device 26 is separated from the wireless communication unit 10 by a predetermined distance or more (non-authenticated state), the wireless communication unit 10 causes a notification unit such as a speaker to issue an alarm (P1 ), The short-range wireless communication is disconnected (P2), and the use of the master data in the personal data memory 12 is restricted (P3). Further, the mobile terminal device 26 transitions to a use restriction state that restricts the function of controlling the data of the mobile terminal device 26 (P4), disconnects the short-range wireless communication (P5), and copies the data stored in the personal data memory 30. Is deleted (P6).

  On the other hand, as shown in FIG. 2B, when the wireless communication unit 10 and the mobile terminal device 26 are closer than a predetermined distance (authentication state), the wireless communication unit 10 causes the notification unit such as a speaker to stop the alarm. (P10), the short-range wireless communication is connected (P11), and the use restriction of the master data in the personal data memory 12 is released (P12).

  In addition, the mobile terminal device 26 transitions to the restriction release state so as not to restrict the function of controlling the data of the mobile terminal device 26 (P13), connects near field communication (P14), and the wireless communication unit 10 The master data in the personal data memory 12 is downloaded to the personal data memory 30 (P15). When the user performs an operation to change the content of the copy data in the personal data memory 30 (P16), the master data in the personal data memory 12 of the wireless communication unit 10 is updated based on the changed personal data (P16). P17).

  If there is another portable terminal device that can wirelessly authenticate with the wireless communication unit, and the other portable terminal device notifies the update of personal data, the master data of the wireless communication unit 10 is updated ( P18), the copy data in the personal data memory 30 is updated based on the updated data (P19).

  FIG. 3 is a flowchart for explaining the personal data processing procedure of the wireless communication unit 10. First, it is determined whether or not the wireless communication unit 10 and the mobile terminal device 26 are close to each other within a predetermined short range (step S1). When it is determined that the wireless communication unit 10 and the mobile terminal device 26 are in a state of approaching within a predetermined short range (step S1; YES), the wireless authentication between the wireless communication unit 10 and the mobile terminal device 26 is successful. It is determined whether or not it has been done (step S2).

  When the wireless authentication between the wireless communication unit 10 and the mobile terminal device 26 is successful (step S2; YES), the master data in the personal data memory 12 of the wireless communication unit 10 is transmitted to the personal data memory 30 of the mobile terminal device 26, Data is copied (step S3). Next, it is determined whether or not the personal data in the personal data memory 30 has been changed by a predetermined operation on the portable terminal device 26 (step S5). If there is no change in the personal data (step S5; NO), the process is terminated. If there is a change in the personal data (step S5; YES), the changed personal data is transmitted from the portable terminal device 26, and the wireless communication unit The master data of the ten personal data memories 12 is updated (step S7), and the process ends.

  Returning to step S <b> 1, when it is determined that the wireless communication unit 10 and the mobile terminal device 26 are not in the state of approaching within a predetermined short distance range (step S <b> 1; NO), the mobile terminal device 26 stores the contents of the personal data memory 30. Is automatically deleted (step S4). In addition, when the wireless authentication between the wireless communication unit 10 and the portable terminal device 26 is not successful in step S2 (step S2; NO), the copy data of the contents of the personal data memory 30 is automatically deleted (step S2). S4). Then, the short-range wireless communication modems 14 and 28 and the personal data memories 12 and 28 are turned off to enter the power saving mode (step S6). The process ends.

  As described above, in the mobile terminal device of the present invention, when wireless authentication is unsuccessful, important information such as personal data is not stored in the mobile terminal device, but is deleted. The possibility of leakage or leakage of important information is reduced.

  In addition, even if only the wireless communication unit containing important information is lost, the wireless authentication with the portable terminal device becomes unsuccessful, and the important information in the wireless communication unit cannot be accessed. Therefore, the possibility that important information is stolen from the wireless communication unit is reduced.

  Furthermore, when large-capacity communication is instantaneously performed between the wireless communication unit and the mobile terminal device, the possibility of eavesdropping by a third party is reduced.

  When a plurality of portable terminal devices are associated with one wireless communication unit, when using each portable terminal device, the same master data stored in the personal data memory of the wireless communication unit is referenced. can do.

  In the above-described embodiment, the information exchanged between the wireless communication unit and the portable terminal device as the object of protection has been described by taking personal data as personal information as an example. However, the data to be protected by the present invention is not only so-called personal data, but also general important data related to important information whose disclosure should be restricted to third parties, such as other confidential information including personal data, confidential information, etc. Will be protected.

  Although various embodiments of the present invention have been described above, the present invention is not limited to the matters shown in the above-described embodiments, and those skilled in the art can make modifications and applications based on the description and well-known techniques. This is also the scope of the present invention, and is included in the scope for which protection is sought.

  The portable terminal device and wireless communication unit of the present invention are useful for protecting important information such as personal data.

The block diagram explaining the structure of one Embodiment of the radio | wireless communication authentication system containing the portable terminal device and radio | wireless communication unit of this invention. The state transition diagram explaining the transition of the event in the state which the radio | wireless communication unit and the portable terminal device left | separated mutually and the state which approached. The flowchart explaining the process sequence of the personal data of the radio | wireless communication authentication system of this invention. The figure explaining the concept of the use restriction in the radio | wireless communication authentication system containing a portable terminal device and a radio | wireless communication unit. The block diagram explaining the structure of the radio | wireless communication authentication system containing the conventional portable terminal device and a radio | wireless communication unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wireless communication unit 12 Personal data memory 14 Short-distance wireless communication modulation / demodulation part 16 Personal data management part 18 Wireless authentication part 20 Memory 22 Authentication determination part 24 Transmission / reception modulation / demodulation part 26 Portable terminal device 28 Short-distance wireless communication modulation / demodulation part 30 Personal data memory 32 Data control unit 34 Personal data management unit 36 Wireless authentication unit 38 Operation display unit 40 Call communication unit 42 Transmission / reception modulation / demodulation unit 44 Authentication determination unit 46 Memory

Claims (8)

A mobile terminal device that performs wireless authentication with a wireless communication unit and can be used while wireless authentication is successful,
A wireless authentication unit for performing wireless authentication;
A data memory capable of storing important data;
A data communication unit for transmitting and receiving important data to and from the wireless communication unit;
A data management unit for erasing important data stored in the data memory when wireless authentication by the wireless authentication unit is unsuccessful;
A mobile terminal device comprising: The mobile terminal device according to claim 1,
The data management unit is a portable terminal device that acquires important data from the wireless unit from the data communication unit and stores it in the data memory while wireless authentication by the wireless authentication unit is successful. The mobile terminal device according to claim 1 or 2,
An operation unit for changing important data stored in the data memory;
When important data is changed by the operation unit, the data management unit transmits the changed important data from the data communication unit to the wireless communication unit. The mobile terminal device according to any one of claims 1 to 3,
A portable terminal device that stops power supply to the data communication unit and the data memory while wireless authentication by the wireless authentication unit is unsuccessful. The mobile terminal device according to any one of claims 1 to 4,
A portable terminal device in which the important data is personal data. A wireless communication unit that performs wireless authentication with a mobile terminal device and enables the mobile terminal device while wireless authentication is successful,
A wireless authentication unit for performing wireless authentication;
A data memory for storing important data;
A data communication unit that transmits and receives important data to and from the mobile terminal device;
When wireless authentication by the wireless authentication unit is successful, a data management unit that transmits important data stored in the data memory from the data communication unit to the mobile terminal device;
A wireless communication unit comprising: The wireless communication unit according to claim 6, wherein
A wireless communication unit in which reading of important data from the data memory is restricted while wireless authentication by the wireless authentication unit is unsuccessful. A wireless communication authentication system comprising a wireless communication unit and a mobile terminal device that performs wireless authentication with the wireless communication unit,
While wireless authentication is successful, important data can be transmitted and received between the mobile terminal device and the wireless communication unit,
A wireless communication authentication system in which important data is not left in the portable terminal device when wireless authentication is unsuccessful.

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