JP2007019746A - Portable terminal equipment provided with non-contact ic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the fraudulent scan of a non-contact IC in portable terminal equipment. <P>SOLUTION: A radio communication authentication system is constituted of the portable terminal equipment 10 including a radio communication data processing part 12, a radio authentication part 14, a scan detection part 16, an illuminance sensor 18 and the non-contact IC 20, and a radio communication unit 24 including a radio authentication part 26 and a user notifying part 28. The illuminance sensor 18 measures illuminance around the portable terminal equipment. Under the conditions that the portable terminal equipment is placed in a dark place, when the non-contact IC is scanned by an external scanner and electromotive force is generated in the non-contact IC 20, the scan detection part 16 detects that the non-contact IC 20 is scanned by the electromotive force, a user is notified of that effect by the user notifying part 11, and the radio communication unit 24 is notified through the radio authentication part 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a portable terminal device including a non-contact IC, and more particularly to a technique capable of preventing unauthorized reading of the non-contact IC.

  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, a portable terminal device capable of disabling the device itself and warning 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).

  FIG. 4 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. In this system, the wireless authentication unit 6 of the wireless communication unit 5 and the wireless authentication unit 2 of the mobile terminal device 1 have an authentication ID associated in advance, and each other uses wireless communication between the antennas A6 and A7. A method of always performing wireless authentication by grasping that there is a one-to-one relationship is adopted.

  The wireless authentication unit 2 of the portable terminal device 1 measures the radio wave attenuation of the wireless communication between the antennas A6 and A7, determines the communication distance between the wireless communication unit 5 and the portable terminal device 1, and is authenticated or not authenticated depending on the distance. And whether or not to restrict use of the wireless communication call unit 3 of the mobile terminal device 1 is determined.

If the wireless communication unit 5 and the mobile terminal device 1 are within a certain distance, it is determined that the mobile terminal device 1 exists in a place that can be managed by the owner, and no use restriction is imposed. If the wireless communication unit 5 and the mobile terminal device 1 are more than a certain distance, it is determined that the mobile terminal device 1 does not exist in a place that can be managed by the owner, and the use is restricted. When the wireless communication unit 5 and the mobile terminal device 1 are separated by a certain distance or more, the wireless communication unit 5 warns the user using the user notification unit 7 such as a speaker.
Japanese Patent Laid-Open No. 11-88499

  By the way, in recent mobile terminal devices, as shown in FIG. 4, many devices are equipped with a non-contact IC 20. Non-contact ICs are formed on a chip by forming various circuits as semiconductor integrated circuits. In this non-contact IC 20, personal information such as account information and settlement information of the user of the mobile terminal device is stored, and such personal information is read and written by the external scanner 22. By adopting such a configuration, various procedures such as settlement can be simplified.

  However, the non-contact IC built in the portable terminal device may be scanned by a third party without the user's knowledge and personal information may be leaked or leaked. In particular, in a crowded crowd or when the user is careless, the information in the non-contact IC is obtained by a malicious third party even though the mobile terminal device 1 is in the user's hand and manageable location. There is a problem to be read (scanned).

  The present invention provides a mobile terminal device that can prevent a risk that information in a non-contact IC built in the mobile terminal device is scanned by a third party without the user's knowledge.

  When the mobile terminal device of the present invention detects a non-contact IC, a scan detection unit that detects that the non-contact IC is scanned, and the scan detection unit that the non-contact IC is scanned, A user notification unit that notifies the user of the fact of scanning. The scan detection unit may detect an electromotive force generated by the non-contact IC when the non-contact IC is scanned.

  With this configuration, a portable terminal device that can prevent a non-contact IC built in the portable terminal device from being scanned by a third party without being noticed by the user due to crowded people or carelessness of the user is realized. The

  In addition, an illuminance sensor that detects ambient illuminance is further provided in the portable terminal device, and when the ambient illuminance detected by the illuminance sensor is equal to or less than a predetermined value, the user notification unit notifies the user of the fact of scanning. It may be configured.

  When the mobile terminal device is placed in a dark place such as a bag or pocket, it is particularly easy to perform unauthorized scanning. Therefore, with the above configuration, the user's attention can be alerted by notifying the user particularly when the user is placed in such a place. In addition, since a legitimate scan is often performed in a bright place, it is possible to prevent an extra notification from being made even when a legitimate scan is performed.

  In addition, the user notification unit can be configured by at least one of a speaker, a light emitting device, and a vibrator.

  Furthermore, the portable terminal device may be configured so that the power is turned on by an emergency interrupt when the non-contact IC is scanned when the portable terminal device is turned off.

  With this configuration, even if the power of the mobile terminal device is off, the power is activated by an emergency interrupt, so that the risk of a non-contact IC built in the mobile terminal device being scanned by a malicious third party is suppressed. be able to. This configuration is particularly useful in the case of a contactless IC that starts even when the power of the mobile terminal device is off.

  Furthermore, the present invention is a wireless communication authentication system comprising a wireless communication unit and a mobile terminal device that performs wireless authentication with the wireless communication unit, the mobile terminal device comprising: a non-contact IC; and the non-contact IC A scan detection unit that detects that scanning has been performed; and a wireless authentication unit that transmits an authentication signal and a notification signal indicating the fact of the scan to the wireless communication unit, and the wireless communication unit includes: A wireless authentication unit that receives the authentication signal and the notification signal from the wireless authentication unit; and a user notification unit that notifies the user of the fact of scanning based on the notification signal.

  In such a wireless communication authentication system, the wireless communication unit receives a notification signal from the portable terminal device and notifies the user of the fact that the contactless IC has been scanned. In the wireless communication unit, an independent operation state can be maintained separately from the operation state of the mobile terminal device. Therefore, even when the mobile terminal device is different from the normal operation mode such as the sleep mode and the power saving mode, the user can be notified of the scanning fact. In addition, the user can be alerted in cooperation with the mobile terminal device or by making such a notification alone.

  According to the mobile terminal device and the wireless communication authentication system of the present invention, it is possible to easily notify the user of a scan of a third party with respect to the non-contact IC of the mobile terminal device. Can protect.

  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 10 and the wireless communication unit 24 of the present embodiment. The mobile terminal device 10 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 24 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, wireless authentication is performed between the mobile terminal device 10 and the wireless communication unit 24, 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.

  In the present invention, a non-contact type IC 20 that incorporates an antenna and communicates with an external scanner (reader / writer) using weak radio waves is mounted on the portable terminal device 10. When a malicious third party tries to scan a contactless IC, it makes a sound that can be heard by the person, the surrounding people, and the scanned third party. Scanning due to can be suppressed.

  The mobile terminal device 10 includes a wireless communication data processing unit 12, a wireless authentication unit 14, a scan detection unit 16, an illuminance sensor 18, a non-contact IC 20, an antenna A1, and an antenna A2.

  The non-contact IC 20 is configured by forming various circuits as a semiconductor integrated circuit on a chip. This non-contact IC 20 stores personal information such as account information and payment information of the user of the portable terminal device, and such personal information is read and written by an external scanner. By adopting such a configuration, various procedures such as settlement can be simplified. The non-contact IC 20 has various names such as an IC card, an IC chip, an IC tag, and RFID (Radio Frequency Identification), but an existing one can be used, and its configuration is not particularly limited.

  The wireless communication unit 24 includes a wireless authentication unit 26, a user notification unit 28, and an antenna A3. The wireless authentication unit 14 and the wireless authentication unit 26 perform wireless authentication using a predetermined authentication signal via the antenna A2 of the mobile terminal device 10 and the antenna A3 of the wireless communication unit 24. In this system, the wireless authentication unit 6 of the wireless communication unit 5 and the wireless authentication unit 2 of the mobile terminal device 1 have an authentication ID associated in advance, and each other uses wireless communication between the antennas A2 and A3. A method of always performing wireless authentication by grasping that there is a one-to-one relationship is adopted.

  The wireless authentication unit 14 of the mobile terminal device 10 measures the radio wave attenuation of the wireless communication between the antennas A2 and A3, obtains the communication distance between the wireless communication unit 24 and the mobile terminal device 10, and is authenticated or not authenticated depending on the distance. And whether or not to restrict the use of the wireless communication data processing unit 12 of the mobile terminal device 10 is determined.

  If the wireless communication unit 24 and the mobile terminal device 10 are within a certain distance, the mobile terminal device 10 determines that the mobile terminal device 10 exists in a location that can be managed by the user, and does not restrict use. If the wireless communication unit 24 and the mobile terminal device 10 are separated from each other by a certain distance or more, it is determined that the mobile terminal device 10 does not exist in a location that can be managed by the user, and usage is restricted. Further, when the wireless communication unit 24 and the mobile terminal device 10 are separated from each other by a certain distance, the wireless communication unit 24 warns the user using the user notification unit 28 such as a speaker.

  Next, the mobile terminal device 10 side will be described. When a malicious third party tries to read information in the non-contact IC 20 using the scanner 22 owned by the malicious third party, an electromotive force is generated in the non-contact IC 20 due to electromagnetic waves generated on the scanner 22 side. The contactless IC 20 operates by this electromotive force. At this time, if the use restriction is not applied to the wireless communication data processing unit 12, the non-contact IC 20 operates normally. And the scan detection part 16 detects the electromotive force of the non-contact IC20, and the user notification part 11 of the radio | wireless communication data processing part 12 notifies a warning with respect to the scan of a third party to a user. The user notification unit 11 includes a speaker that emits a warning sound, a vibrator that notifies a warning by vibration, a light emitting device such as an LED that visually issues a warning, and the configuration is not limited as long as it can notify the warning. .

  The scan detection unit 16 detects that the non-contact IC 20 is scanned by the third-party scanner 22 using the electromotive force inside the non-contact IC 20 as a trigger, and the wireless authentication unit 14 and the wireless communication data processing unit 12 Notice. By this notification, the wireless authentication unit 14 gives a use restriction signal for restricting use to the wireless communication data processing unit 12 and is scanned by the third-party scanner 22 to the wireless communication unit 24 via the antenna A3. A notification signal indicating the fact is transmitted together with the authentication signal.

  The mobile terminal device 10 of the present embodiment further includes an illuminance sensor 18. The illuminance sensor 18 detects the brightness (illuminance, luminance, etc.) around the mobile terminal device 10, and when the brightness (illuminance) is a predetermined value or less, the mobile terminal device 10 exists in a dark place (dark place). A signal indicating that this is to be performed is given to the scan detector 16. Only when this signal is given, the scan detection unit 16 can make the user notification unit 11 ready for activation.

  In general, when the mobile terminal device 10 exists in a predetermined dark place such as the inside of a bag or the inside of a pocket, unauthorized scanning by a third party is often performed. On the other hand, when the mobile terminal device 10 is present in a bright place, such as when taken out from a bag, there are few cases where unauthorized scanning is performed. Therefore, only when the illuminance sensor 18 gives a signal indicating that the mobile terminal device 10 is in a dark place to the scan detection unit 16, the scan detection unit 16 can set the user notification unit 11 in a startable state. . Accordingly, it is possible to prevent the user notification unit 11 from operating even when a normal scan is performed in a bright place. Of course, the illuminance sensor 18 is provided as necessary, and is not an essential configuration. The predetermined value of the illuminance described above may also be variable depending on the situation.

  In addition, the scan detection unit 16 that has received a notification of scanning by a third party can also be configured to give a use restriction signal to the non-contact IC 20 to restrict the use of the non-contact IC 20 and make it unreadable. . Thereby, it is possible to prevent information from being read from the non-contact IC 20 by the scanner 22.

  The antenna A1 is used to perform normal wireless communication such as voice communication and mail communication with the antenna A4 of the base station 8 of the mobile terminal device. Therefore, via the antenna A1, the antenna A4, and the base station 8, a mail is transmitted to the emergency contact address registered in advance between the mobile terminal device 10 and the wireless communication unit 24 by normal wireless communication, and information is exchanged. It may be determined whether or not the access is unauthorized.

  Further, for example, a switching circuit (not shown) having a function of starting the power supply by an emergency interrupt may be provided in the mobile terminal device 10 even when the power of the mobile terminal device 10 is off. As a result, even if the power of the mobile terminal device 10 is off, the emergency interrupt function is activated when the contactless IC 20 is scanned by a third party, the power is turned on, and the mobile terminal device 10 is activated. Can be configured to execute the warning function. This configuration can also be applied when the mobile terminal device 10 is in a sleep state such as a power saving mode. In general, the non-contact IC 20 can operate by receiving power from the external scanner 22 or the like regardless of the power-on / off state and the operation mode of the mobile terminal device 10.

  Next, the wireless communication unit will be described. The wireless communication unit 24 includes a wireless authentication unit 26 and user notification means 28. When the wireless authentication unit 26 receives a notification of unauthorized scanning by a third party on the mobile terminal device 10 side, the user notification unit 28 operates to notify the user to that effect. Similarly to the user notification unit 11, the user notification unit 28 includes a speaker that emits a warning sound, a vibrator that notifies the warning by vibration, a light emitting device such as an LED that visually issues a warning. If so, the configuration is not limited. At this time, it is also possible to control so that the user notification unit 11 of the mobile terminal device 10 does not operate. Conversely, when the user notification unit 11 of the mobile terminal device 10 operates, it is possible to control the user notification unit 28 of the wireless communication unit 24 not to operate.

  Further, even when the mobile terminal device 10 is in a sleep state such as the power saving mode, when the contactless IC 20 is scanned by a third party, the wireless communication unit 24 notifies the user by wireless authentication between the antennas A2 and A3. It is also possible to adopt a configuration in which the unit operates.

  FIG. 2 is a diagram for explaining a situation where a third party approaches and scans information for the user 40 wearing the mobile terminal device 10 and the wireless communication unit 24 on the body. When a malicious third party 38 attempts to perform non-contact scanning of the mobile terminal device 10 using the scanner 22, an electromotive force is generated in the non-contact IC 20. Using this electromotive force as a trigger, the mobile terminal device 10 prevents unauthorized scanning by exhibiting a notification function such as a warning.

  When the wireless communication data processing unit 12 of the mobile terminal device 10 is operating in the power saving mode and cannot make a sound, the wireless communication data processing unit 12 uses the scan notification signal output from the scan detection unit 16 as an interrupt signal. It may be configured that the power supply is activated and the mobile terminal device 10 sounds a warning sound.

  Further, as described above, the wireless communication unit 24 exhibits a notification function at the same time as or independently of the mobile terminal device 10 by the wireless authentication communication exchanged between the mobile terminal device 10 and the wireless communication unit 24. In particular, since the wireless communication unit 24 is often mounted at a position close to the audiovisual organ of the user 40, it is possible to notify the user more easily. This improves the suppression of unauthorized scanning.

  That is, not only the warning of the mobile terminal device 10 but also the scan detection unit 16 outputs a scan notification signal to the wireless authentication unit 14 and transmits it to the wireless communication unit 24 using wireless communication between the antennas A2 and A3. Then, the wireless authentication unit 26 of the wireless communication unit 24 outputs the received notification signal to the user notification unit 28, and the wireless communication unit 24 also notifies the warning. Furthermore, the mobile terminal device 10 and the wireless communication unit 24 may issue a warning notification at the same time.

  FIG. 3 is a flowchart illustrating a control flow of the mobile terminal device 10 of the present embodiment. First, when an electromotive force is generated in the non-contact IC 20 of the mobile terminal device 10 due to some external scan (step S1; YES), the illuminance sensor 18 determines whether or not the device exists in a dark place. (Step S2). If it is not a dark place (step S2; NO), in the present embodiment, no particular processing is performed, and normal control is shifted to. On the other hand, when it is a dark place (step S2; YES), the illuminance sensor 18 gives a signal indicating that the mobile terminal device 10 is present in an environment having a predetermined illuminance or less to the scan detection unit 16 (step S3). Then, the scan detection unit 16 puts the non-contact IC 20 in a non-operating state (Step S4).

  Further, the scan detection unit 16 instructs the wireless authentication unit 14 to transmit a notification signal indicating that scanning in the dark place has been performed to the wireless communication unit 24 (step S5). Next, a warning sound is emitted from a speaker (not shown) to notify the user that scanning in a dark place has been performed (step S6).

  As described above, in the present invention, when any scan is performed on the non-contact IC by an external scanner, the mobile terminal device notifies the user to that effect. Therefore, the user can quickly notice such a scan, and can respond promptly if it is an illegal scan.

  In addition, the wireless communication unit can also notify with the mobile terminal device alone or as needed. Such a configuration contributes to a more reliable notification to the user.

  Furthermore, since the portable terminal device of the present embodiment has an illuminance sensor and has a configuration in which the above-described notification function is exhibited only when the surrounding is darker than a certain illuminance, notification is also made in the case of a legitimate scan that is not illegal. It can reduce the situation of being done.

  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.

  According to the mobile terminal device and the wireless communication authentication system of the present invention, it is possible to easily notify the user of a scan of a third party with respect to the non-contact IC of the mobile terminal device. Can protect.

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 figure which shows the user who mounted | worn the portable terminal device and the radio | wireless communication unit to the body, and the third party who is going to scan a portable terminal device. The flowchart explaining the control flow of the portable terminal device of embodiment. The block diagram explaining the whole structure of the radio | wireless communication authentication system using the conventional radio | wireless authentication.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Portable terminal device 11 User notification part 12 Wireless communication data processing part 14 Wireless authentication part 16 Scan detection part 18 Illuminance sensor 20 Non-contact IC
22 Scanner 24 Wireless Communication Unit 26 Wireless Authentication Unit 28 User Notification Unit

Claims (6)

Non-contact IC,
A scan detection unit for detecting that the non-contact IC is scanned;
A user notification unit that notifies the user of the fact of scanning when the scan detection unit detects that the non-contact IC has been scanned;
A mobile terminal device comprising: The mobile terminal device according to claim 1,
The scan detection unit is a portable terminal device that detects an electromotive force generated by the non-contact IC when the non-contact IC is scanned. The mobile terminal device according to claim 1 or 2,
An illuminance sensor that detects ambient illuminance is further provided,
When the surrounding illuminance detected by the illuminance sensor is equal to or less than a predetermined value, the user notification unit notifies the user of the fact of scanning. The mobile terminal device according to any one of claims 1 to 3,
The user notification unit is a mobile terminal device including at least one of a speaker, a light emitting device, and a vibrator. The mobile terminal device according to any one of claims 1 to 4,
A portable terminal device that is turned on by an emergency interrupt when the non-contact IC is scanned when the portable terminal device is turned off. A wireless communication authentication system comprising a wireless communication unit and a mobile terminal device that performs wireless authentication with the wireless communication unit,
The portable terminal device includes a non-contact IC, a scan detection unit that detects that the non-contact IC is scanned, and a wireless authentication unit that transmits an authentication signal and a notification signal indicating the fact of the scan to the wireless communication unit And comprising
The wireless communication unit includes: a wireless authentication unit that receives the authentication signal and the notification signal from a wireless authentication unit of the mobile terminal device; and a user notification unit that notifies a user of the fact of scanning based on the notification signal. A wireless communication authentication system provided.

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