JP2006319649A - Portable terminal, and its use restriction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal and its use restriction method controlling use constriction while power consumption is reduced and influence on the outside is also reduced. <P>SOLUTION: Authentication is performed between a portable telephone 1 and a key 3 by transmitting respective inherent portable telephone code and key code by radio communication, and only when authentication is established, the use limitation of the portable telephone 1 is released. When the portable telephone 1 is in a limited use state, radio communication for authentication is performed when an authentication button 18 provided in the portable telephone 1 is pressed down. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a portable terminal device and a usage restriction method thereof.

  Conventionally, in order to prevent unauthorized use of various devices such as mobile phones due to misplacement or theft, restrictions on the use of devices that restrict mobile phone call functions when the mobile phone is more than a certain distance away from the owner There was a device.

In this use restriction device, the identification code is transmitted and received between the identification signal transmission unit carried by the owner of the mobile phone and the use restriction release unit built in the mobile phone, and both units are separated by a certain distance or more. Sometimes, the release unit stops the use restriction release signal of the mobile phone (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 11-88499

  However, in the above device use restriction device, in order to maintain the reliability of use restriction, frequent wireless communication is performed between the use restriction releasing unit built in the mobile phone and the identification signal transmitting unit. There is a need to do. As a result, there has been a situation in which the amount of finite power held by the mobile phone increases.

  In addition, due to frequent communication, the radio waves may affect other communication devices. In particular, in a place where there are many people, there is a situation in which an error in the use restriction determination may occur due to interference caused by radio waves.

  Furthermore, if the use restriction cancellation unit built in the mobile phone and the identification signal transmission unit are within a certain distance, there is a situation that others can use the mobile phone against the intention of the owner.

  The present invention has been made in view of the above circumstances, and provides a portable terminal device capable of controlling the use restriction while reducing power consumption and external influence, and a use restriction method thereof. With the goal.

  The portable terminal device of the present invention includes a function control unit that controls use restriction for a predetermined function, an authentication start unit that outputs an authentication start instruction when a specified authentication start operation is performed, and the authentication start instruction Based on an authentication request transmitting means for making an authentication request to an external wireless device, an authentication response receiving means for receiving an authentication response to the authentication request from the wireless device, and based on the received authentication response, Authentication determination means for determining whether or not the wireless device is permitted to cancel the use restriction, and determining whether authentication is established when the distance to the wireless device is shorter than a first distance, The function control means releases the restriction on the use of the predetermined function only while the authentication by the authentication determination means is established.

  With this configuration, authentication is performed only when the use restriction needs to be released, so that the power required for use restriction and the influence on other communication devices can be reduced.

  The portable terminal device of the present invention further includes an authentication start instruction input unit that receives an input of authentication start as the authentication start operation.

  With this configuration, authentication is started by inputting an authentication start instruction, so that authentication can be performed only when the user intends to start authentication.

  In the mobile terminal device of the present invention, the authentication determination unit cancels the establishment of the authentication when a designated operation is detected.

  With this configuration, since the establishment of authentication is canceled by performing a designated operation and the use of a predetermined function is restricted, the use of the mobile terminal device when the user does not intend can be restricted.

  In the mobile terminal device of the present invention, the authentication determination unit cancels the authentication establishment when an operation input is not detected for a predetermined time.

  With this configuration, when the operation input is not detected for a predetermined time, the establishment of the authentication is canceled and the use of the predetermined function is restricted, so that the user can use the mobile terminal device without giving an instruction to restrict the use of the user himself / herself. Can be limited.

  Further, in the mobile terminal device of the present invention, after the authentication is established, the authentication request transmitting means and the authentication request response receiving means perform an authentication operation with the wireless device every predetermined time, and the authentication determining means When the distance to the authenticated wireless device exceeds a second distance that is longer than the first distance, the establishment of the authentication is canceled.

  With this configuration, use of a predetermined function can be restricted when the user leaves the mobile terminal device.

  The portable terminal device of the present invention further includes identification information storage means for storing identification information associated with each of a plurality of wireless devices that can permit the use restriction to be released, and the authentication response determination means includes: The identification information of the wireless device included in the received authentication response is compared with the stored identification information to determine whether the received authentication response is from an authenticable wireless device, and which wireless The function control means removes the restriction on the use of the function corresponding to the specified wireless device when authentication with respect to the specified wireless device is established.

  With this configuration, the use restriction of the function corresponding to the wireless device is released, so that a plurality of users can share one portable terminal device.

  Also, the portable terminal device of the present invention presents a wireless device that is a candidate when the authentication determination unit determines that there are a plurality of wireless devices that can be permitted to release the use restriction within a predetermined distance. Means are further provided.

  With this configuration, when a plurality of users share one mobile terminal device, it can be presented when there are a plurality of candidate users in a predetermined area.

  In the mobile terminal device of the present invention, the function control means obtains data corresponding to the specified wireless device from the outside when authentication with respect to the specified wireless device is established.

  With this configuration, since it is not necessary to store data separately for each of a plurality of users in the mobile terminal device, it is possible to cope with a plurality of users without providing a special function other than the authentication function for a plurality of users. it can.

  Further, in the portable terminal device of the present invention, the function control means is configured to provide data corresponding to the specified wireless device acquired from the outside when the authentication for the specified wireless device transitions from the established state to the unestablished state. Is automatically discarded.

  With this configuration, when the mobile terminal device is left behind, the data used when the authentication in the mobile terminal measure is established can be automatically protected from being seen by a third party.

  The use restriction method of the present invention is a method for restricting use of a mobile terminal device that controls use restriction of a predetermined function, the step of outputting an authentication start instruction when a designated authentication start operation is performed, and the authentication Making an authentication request to an external wireless device based on a start instruction; receiving an authentication response to the authentication request from the wireless device; and using the use restriction based on the received authentication response. Determining whether the wireless device is permitted to be released, detecting a distance from the wireless device, and the authentication response is from a wireless device that is permitted to release the use restriction. And, when the distance to the wireless device is shorter than the first distance, the step of determining the establishment of authentication, and only while the authentication by the authentication determination unit is established, And a step of releasing the restriction of the use of a constant function.

  With this configuration, authentication is performed only when the use restriction needs to be released, so that the power required for use restriction and the influence on other communication devices can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, the portable terminal device which can perform use restriction control by reducing power consumption and the influence on the exterior, and its use restriction method can be provided.

  Hereinafter, a use restriction system and a use restriction method for a mobile terminal device according to an embodiment of the present invention will be described with reference to the drawings. Here, as an example of the mobile terminal device, a case of an openable mobile phone will be described, but in addition to the mobile information terminal (PDA), a mobile game machine and the like can be given. Further, the mobile phone is not necessarily limited to an openable mobile phone, and may be a mobile phone that is not openable.

  FIG. 1 is a block diagram showing a schematic configuration of a mobile phone use restriction system according to an embodiment of the present invention. This system restricts the use of functions of the mobile phone 1 by performing authentication between the same mobile phone 1 and a key 3 that is a wireless device carried by the user. In the present embodiment, the functions subject to usage restrictions are all functions except the authentication function of the mobile phone 1. Therefore, the mobile phone 1 is in a so-called locked state when use is restricted. It should be noted that the functions subject to use restrictions may be limited to some predetermined functions, and the functions may be selectable by the user.

  The mobile phone 1 and the key 3 each store a mobile phone code and a key code, which are identification information set independently, and authentication is performed using the mobile phone code and the key code.

  The mobile phone 1 has an operation including a memory 11, an authentication determination / function control unit 12, a modulation / radio transmission unit 13, an antenna 14, a radio reception / demodulation unit 15, a power control unit 16, and an authentication button 18. A unit 17, a light emitting diode (hereinafter referred to as LED) 19, a display unit 20, a radio unit 21, and an antenna 22 are provided.

  The memory 11 stores, as an associated authentication key, the key code of the key 3 possessed by the owner who can permit the use restriction to be released. A plurality of key codes can be stored. In the example of FIG. 1, two key codes (key code A and key code B) are stored.

  The authentication determination / function control unit 12 performs authentication determination by comparing the key code transmitted from the key 3 with the key code stored in the memory 11, and according to the determination result, the predetermined function of the mobile phone 1 is determined. Control usage restrictions. The authentication determination / function control unit 12 stores a mobile phone code.

  The modulation / radio transmission unit 13 modulates the mobile phone code output from the authentication determination / function control unit 12 and transmits a radio signal via the antenna 14. The radio reception / demodulation unit 15 receives a radio signal from the key 3 received via the antenna 14, demodulates the key code, and outputs it to the authentication determination / function control unit 12 together with the power of the received radio signal. The power control unit 16 controls the power of the modulation / radio transmission unit 13 and the radio reception / demodulation unit 15 in accordance with an instruction from the authentication determination / function control unit 12.

  The operation unit 17 includes an authentication button 18 that receives an input for performing an authentication operation on the key 3. In addition, it has a numeric keypad for receiving an operation input from the user.

  For example, the LED 19 emits light while authentication for the key 3 is established by the authentication determination / function control unit 12. The display unit 20 displays various functions of the mobile phone 1.

  For example, the wireless unit 21 performs wireless communication with a communication method different from the communication method with the key 3. In the present embodiment, it is assumed that a mobile phone network is connected to communicate with a base station device (not shown) via an antenna 22.

  The key 3 includes an antenna 31, a radio reception / demodulation unit 32, a memory 33, an authentication determination unit 34, and a modulation / radio transmission unit 35.

  The radio reception / demodulation unit 32 receives the radio signal transmitted from the mobile phone 1 via the antenna 31, demodulates the mobile phone code, and outputs it to the authentication determination unit 34 together with the power of the received radio signal.

  The memory 33 stores the mobile phone code of the mobile phone 1 that can be authenticated with its own key 3 as an associated mobile phone key. A plurality of mobile phone codes can be stored. In the example of FIG. 1, two mobile phone codes (mobile phone code A and mobile phone code B) are stored.

  The authentication determination unit 34 has a key code set in itself, and performs authentication by comparing the mobile phone code output from the radio reception / demodulation unit 32 with the mobile phone code stored in the memory 33. If there is a matching mobile phone code, it outputs its own key code to the modulation / radio transmission unit 35.

  The modulation / radio transmission unit 35 modulates the key code output from the authentication determination unit 34 and transmits a radio signal via the antenna 31.

  The key 3 preferably has a configuration in which power is supplied by radio waves from the mobile phone 1. Thereby, a battery can be made unnecessary for the key 3.

  2A and 2B are views showing the appearance of the mobile phone according to the embodiment of the present invention. FIG. 2A shows a state in which the housing is opened, and FIG. 2B shows a state in which the housing is closed. As shown in FIG. 2, the mobile phone 1 includes a first housing 10A and a second housing 10B that are connected to be openable and closable. The authentication button 18 is attached to a position that can be pressed when the mobile phone 1 is held by hand, for example, the side surface of the second housing 10B. Moreover, LED19 is attached to the position exposed outside, for example, the side surface of an upper housing | casing irrespective of the open / closed state of a housing | casing.

  Next, the operation of the mobile phone use restriction system according to the embodiment of the present invention will be described. The mobile phone 1 is in a state where the use restriction is released only while the authentication for the key 3 worn by the user is established.

  Therefore, in the present embodiment, when the user presses the authentication button, it is determined that the user has an intention to use the mobile phone, and authentication is performed. Hereinafter, a case where authentication is performed when the mobile phone 1 is in a use restriction state is referred to as initial authentication.

  FIG. 3 is a diagram illustrating an initial authentication method according to an embodiment of the present invention. When the user performs initial authentication from the mobile phone 1 to the key 3, the user of the mobile phone 1 starts the initial authentication when the user presses the authentication button 18. This initial authentication is performed by reducing the power output from the mobile phone 1 to the key 3 and enables authentication at a short distance (for example, within about 30 cm). Thereby, the authentication operation can be performed only on the key 3 of the user who intends to perform the authentication. Moreover, the power consumption of the mobile phone 1 can be reduced. In addition, it is possible to reduce the influence on surrounding communication devices.

  In the system configured as described above, when the authentication button 18 of the mobile phone 1 is pressed, the authentication determination / function control unit 12 outputs a mobile phone code as an authentication request to the key 3. This cellular phone code is transmitted as a radio signal via the modulation / radio transmission unit 13 and the antenna 14. Note that the transmission output of the transmitted radio signal is an output that can be reached only by a power control unit 16 at a short distance.

  If the key 3 is in a position close to the mobile phone 1, the radio signal transmitted from the mobile phone 1 is received via the antenna 31 and the radio reception / demodulation unit 32 of the key 3, and the mobile phone code is demodulated. . The authentication determination unit 34 compares the demodulated mobile phone code with the mobile phone code stored in the memory 33. If the comparison determination results in a match with the stored cellular phone code, the authentication determination unit 34 transmits its own key code as an authentication response to the modulation / radio transmission unit 35. The key code output from the authentication determination unit 34 is transmitted as a radio signal via the modulation / radio transmission unit 35 and the antenna 31.

  The cellular phone 1 demodulates the key code by receiving the radio signal transmitted from the key 3 with the antenna 14 and the radio reception / demodulation unit. The authentication determination / function control unit 12 compares the received key code with the key code stored in the memory 11. If it is determined by this comparison determination that the key code matches that stored, the authentication determination / function control unit 12 determines that authentication has been established, and restricts the restricted function to the use restriction of the function corresponding to the key code. Is released. For example, if the key code indicates the key 3 of the user A, user data such as the phone book data of the user A can be called.

  If authentication is established, information corresponding to the authenticated key code (authenticated user data) may be acquired from the external server 5 (see FIG. 1) via the wireless unit 21 and the antenna 22. Good. Thereby, since it is not necessary to store data separately for each of a plurality of users in the mobile terminal device, it is possible to deal with a plurality of users without providing a special function other than the authentication function for the plurality of users. .

  Further, the authentication determination / function control unit 12 responds to the identified key 3 acquired from the external server 5 (see FIG. 1) when the authentication for the identified key 3 is changed from the established state to the unestablished state. The authenticated user data may be automatically discarded. Thereby, when the cellular phone 1 is left behind, the data used when the authentication in the cellular phone 1 is established can be automatically protected from being seen by a third party.

  4A and 4B are diagrams illustrating a state of initial authentication according to the embodiment of the present invention. FIG. 4A is a state where initial authentication is possible, FIG. 4B is a state where initial authentication is impossible, and FIG. C) shows a state after the initial authentication is established.

  As shown in FIG. 4A, the initial authentication is established if the mobile phone 1 and the key 3 are close to each other, and the mobile phone 1 and the key 3 can be separated as shown in FIG. Initial authentication is not established. Further, as shown in FIG. 4C, when the initial authentication is established, even if the mobile phone 1 and the key 3 are separated from the distance for the initial authentication, the authentication establishment state continues and the use restriction of the mobile phone 1 is maintained. The state has been released.

  As described above, the authentication establishment state is canceled according to a predetermined rule. That is, the mobile phone 1 returns to the use restricted state according to a predetermined rule. Examples of the predetermined rule include a case where the authentication / function control unit 12 detects a designated operation such as pressing of the authentication button 18 in the authentication establishment state or closing of the housing. Another example is a case where no operation input is detected for a predetermined time (for example, in seconds). In this case, there is a method of informing the LED 19 by blinking before the authentication establishment state is canceled.

  As yet another example, after the initial authentication, the power control unit 16 performs an authentication operation with a larger power than the initial authentication on the key 3 for which authentication has been established, at a predetermined time. If the authentication establishment state is continued as long as the key 3 exists within a second distance (for example, 3 m) farther than the distance (first distance) and it is determined that the key 3 is separated from the second distance (the second distance is If the communication distance with the key 3 is communicable, the authentication establishment state may be canceled when it is determined that the communication has been disconnected.

  In this way, the authentication determination / function control unit 12 issues an authentication start instruction by outputting its own mobile phone code when a specified authentication start operation is performed, such as when the authentication button 18 is pressed, The modulation / radio transmission unit 13 issues an authentication request to the key 3. Thereby, by performing authentication only when necessary, power consumption and the influence on the surroundings can be reduced.

  Note that the authentication start operation is not limited to pressing by the authentication button 18, and when it is detected that the casing is opened by an unillustrated opening / closing sensor, a predetermined acceleration pattern is detected by an unillustrated acceleration sensor. In some cases, a key lock release operation may be input.

  The wireless reception / demodulation unit 15 receives an authentication response to the authentication request from the key 3, and the authentication determination / function control unit 12 allows the use restriction to be released based on the received authentication response. If the distance from the key 3 is a short distance, it is determined that the authentication is established.

  In the above embodiment, since the authentication response is not returned unless the key 3 is within the reach of the authentication request for the key 3, whether or not the distance from the key 3 is a short distance depends on the authentication response. It can be determined by the presence or absence. However, the authentication request for the key 3 may be transmitted so as to reach far from a short distance, and the distance may be determined from the received power, error rate, etc. of the returned authentication response.

  Next, an authentication method when a plurality of people use the same mobile phone and an authentication method of a plurality of mobile phones with one key (the same owner) will be described.

  FIG. 5 is an explanatory diagram when a plurality of mobile phones are used with one key, and FIG. 6 is an explanatory diagram when one mobile phone is used with a plurality of keys.

  The mobile phone and the key are associated with each other in advance and an identification code is stored in each memory. In this association, the user name of the owner of the key is registered in the memory 11 of the mobile phone 1. The registered name can be used when the name of the key owner is displayed on the display unit 20 when the mobile phone 1 and the key 3 authenticate. This is because the identification information of the key itself cannot be displayed in terms of security such as misuse and duplication of the key.

  In the example shown in FIG. 5, the key 3a of the owner A is associated with the mobile phone 1a, and the key 3a of the owner A is also associated with the mobile phone 1b. Mr. A can use the two mobile phones 1a and 1b with one key 3a. When the key 3a exists where the authentication area AA of the mobile phone 1a and the authentication area AB of the mobile phone 1b overlap, Mr. A can use two mobile phones 1a and 1b at the same time with one key 3a. it can. Even if the key 3b not associated with the mobile phone 1a exists in the authentication area AA, the mobile phone 1a is not authenticated with the key 3b.

  In the example shown in FIG. 6, the key 3a of the owner A and the key 3b of the owner B are associated with the mobile phone 1a. The mobile phone 1a can be used by both Mr. A and Mr. B.

  When a plurality of keys (persons) want to share the same mobile phone, the mobile phone checks candidates with keys in the authentication area at the time of authentication (when the authentication button is pressed). At this time, by measuring the radio wave propagation distance with each key by the electric field strength, it can be divided into a long-distance authentication area, a short-distance authentication area, and an out-of-authentication area (an area that can communicate but cannot communicate with a long propagation distance). it can.

  FIG. 7 is a flowchart showing the procedure of the authentication method according to the embodiment of the present invention. When the user presses the authentication button 18 (step S1), the authentication determination / function control unit 12 determines that the user is requesting authentication. Then, the mobile phone 1 makes an authentication request using wireless communication, and monitors the authentication response from the surrounding keys, thereby detecting the surrounding keys (keys existing in the second range including the first range). ) Is searched (step S2). As a result, when an authentication key is not found or there are a plurality of authentication keys in a short distance (within the first range narrower than the second range) (YES in step S3), it is determined as a key search error, that is, an authentication error. (Step S4).

  However, if there is a key in the second range (NO in step S3) and there is one key in the first range (YES in step S5), the user of the key in the first range is not Authentication is established (step S9).

  If there is no key in the first range (NO in step S5), that is, there is a key in the second range, but no key is in the first range, the mobile phone 1 A display unit that obtains a distance from the reception strength of the radio signal from the key 3, an error rate, and the like, displays key users corresponding to keys existing in order of increasing distance as candidates, and further prompts selection or re-authentication of the candidates. 20 (step S6). When the user selects a candidate (step S7 (2)) and performs password authentication (step S8), authentication is established (step S9). When authentication is established, the use restriction of the function corresponding to the user is released.

  Authentication in the first range may make it possible for a third party to know the physical location of the key, but in this way it is difficult to determine the physical location of the key. Also, there is a means for enabling initial authentication by combining passwords, so that it can be used properly according to the usage status of the user.

  If no candidate is selected, the process waits for an authentication button to be re-authenticated, and if there is a re-authentication button is pressed (step S7 (1)), the key is searched again (step S2). If there is no operation input for a predetermined time, the process may be terminated.

  FIG. 8 is an explanatory diagram showing an authentication state of the mobile phone for a plurality of users according to the embodiment of the present invention. As shown in FIG. 8, when only one key 3a registered in the mobile phone 1 exists in the first range A1, authentication is established.

  If the key 3a does not exist and the keys 3b and 3c registered in the mobile phone 1 exist in the second range A2, authentication is performed by selecting a candidate or performing re-authentication. Do. Even if the key 3x exists in the second range A2, if it is not registered in the mobile phone 1, it is not subject to authentication. Even if it is registered in the mobile phone 1, if it exists outside the second range A 2 as in the key 3 d, it is not subject to authentication.

  FIG. 9 is a diagram showing a screen display at the time of authentication of the mobile phone for a plurality of users according to the embodiment of the present invention. FIG. 9A is an authentication selection screen at the time of START in FIG. ) Is a screen that displays the candidates searched in step S7 of FIG. 7, ie, step S6, and allows the user to select whether to re-authenticate or select a user to log in. FIG. 9C shows step S8 of FIG. The login screen is shown.

  In this way, for a plurality of keys, authentication is determined based on the distance between the key and the mobile phone and the button operation, so that mobile phones used in common can be easily authenticated. In addition, information on a plurality of associated users can be individually stored in the mobile phone, and the information can be used for each authenticated key.

  FIG. 10 is a diagram showing an example of restricting the use of a mobile phone. FIG. 10A shows a case in which Mr. A is authenticated, and the mobile phone A can use Mr. A's call charge service, Mr. A's address book, Mr. A's electronic money, and the like. FIG. 10B shows that Mr. A is authenticated and Mr. B cannot be authenticated. FIG. 10C shows a case where Mr. B is authenticated, and the mobile phone A can use Mr. B's call charge service, Mr. B's address book, Mr. B's electronic money, and the like.

  After the initial authentication is established, the authentication establishment state is maintained or released according to a certain rule for continuing authentication. At this time, wireless polling or change of a key code for safety may be performed at a long time interval (10 seconds or the like).

  In addition, when you use the payment function such as the credit function or the personal information reference function such as the address book after a certain period of time has passed since you moved to the long-distance authentication area, authenticate in the short-distance authentication area again from the application. You may instruct them to do so. Further, the authentication may be disconnected (the LED is turned off) to prompt re-authentication (operation of pressing the authentication button).

  As described above, in the present embodiment, in the mobile phone, an authentication determination step of performing authentication determination by comparing each key code transmitted from any key with a pre-stored key code, and each key using the mobile phone An authentication determination step of performing authentication determination by comparing the unique mobile code transmitted from the mobile phone with a pre-stored mobile code, and transmitting / receiving between the mobile phone and each key within a predetermined distance It is done by communication.

  Therefore, it is possible to prevent unauthorized use contrary to the owner's intention due to misplacement of the mobile phone, theft, etc., and it is possible to easily release the restriction with the intention of the owner. In addition, since radio waves are blown by a button operation, initial authentication is performed, and polling (less than a few seconds) is not always performed, power consumption can be reduced and interference by radio waves can be prevented.

  Furthermore, the continuation of the authentication establishment state can be disconnected by intentional operation or when no operation time has elapsed, and can also be disconnected by distance measurement by long period (10 seconds) polling. In addition, automatic authentication permission can be associated with multiple keys and multiple mobile phones only when a button is pressed at a short distance, and individual mobile phone internal information can be used for individual authentication. The same mobile phone can be used by multiple people.

  The portable terminal device according to the present invention has an effect of being able to control use restriction while reducing power consumption and external influence, and is useful for restricting use of a mobile phone.

1 is a block diagram showing a schematic configuration of a mobile phone use restriction system according to an embodiment of the present invention. The figure which shows the external appearance of the mobile telephone which concerns on embodiment of this invention The figure which shows the method of the initial authentication which concerns on embodiment of this invention The figure which shows the state of the initial authentication which concerns on embodiment of this invention Explanatory diagram when using multiple mobile phones with one key Explanatory diagram when using one mobile phone with multiple keys The flowchart which shows the procedure of the authentication method which concerns on embodiment of this invention. Explanatory drawing which shows the authentication state of the mobile phone for two or more users concerning the embodiment of the present invention. The figure which shows the screen display at the time of the authentication of the mobile phone for two or more users concerning the embodiment of the present invention. The figure which shows the usage-restriction example of the mobile phone corresponding to multiple users concerning embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone 3 Key 5 Server 11 Memory 12 Authentication determination / function control part 13 Modulation / radio transmission part 14 Antenna 15 Radio reception / demodulation part 16 Power control part 17 Operation part 18 Authentication button 19 LED
DESCRIPTION OF SYMBOLS 20 Display part 21 Radio | wireless part 22 Antenna 31 Antenna 32 Wireless reception / demodulation part 33 Memory 34 Authentication determination part 35 Modulation / radio transmission part

Claims (10)

Function control means for controlling use restrictions for a predetermined function;
An authentication start means for outputting an authentication start instruction when a specified authentication start operation is performed;
An authentication request transmitting means for making an authentication request to an external wireless device based on the authentication start instruction;
Authentication response receiving means for receiving an authentication response to the authentication request from the wireless device;
Based on the received authentication response, it is determined whether or not the wireless device is permitted to release the use restriction, and if the distance from the wireless device is shorter than a first distance, determination of establishment of authentication Authentication determination means for performing
The function control means is a portable terminal device that releases the restriction on the use of the predetermined function only while authentication by the authentication determination means is established. The mobile terminal device according to claim 1,
A portable terminal device further comprising authentication start instruction input means for receiving an input of authentication start as the authentication start operation. The mobile terminal device according to claim 1 or 2,
The authentication determination unit is a mobile terminal device that cancels the establishment of the authentication when a designated operation is detected. The mobile terminal device according to any one of claims 1 to 3,
The said authentication determination means is a portable terminal device which cancels | releases the said authentication establishment, when operation input is not detected for predetermined time. The mobile terminal device according to any one of claims 1 to 4,
After the authentication is established, the authentication request transmitting unit and the authentication request response receiving unit perform an authentication operation with the wireless device every predetermined time,
The authentication determination unit is a portable terminal device that cancels the establishment of authentication when a distance from the authenticated wireless device exceeds a second distance that is longer than the first distance. The mobile terminal device according to any one of claims 1 to 5,
Further comprising identification information storage means for storing identification information associated with each of a plurality of wireless devices that can permit the release of the use restriction,
Whether the authentication response determination unit compares the identification information of the wireless device included in the received authentication response with the stored identification information, and whether the received authentication response is from a wireless device that can be authenticated And identify which wireless device it belongs to,
The function control means is a mobile terminal device that releases the restriction on the use of a function corresponding to the specified wireless device when authentication for the specified wireless device is established. The mobile terminal device according to claim 6,
A portable terminal device further comprising a presenting unit that presents a candidate wireless device when the authentication determining unit determines that there are a plurality of wireless devices that can be permitted to release the use restriction within a predetermined distance. The mobile terminal device according to claim 6 or 7,
The function control means is a portable terminal device that acquires data corresponding to the specified wireless device from the outside when authentication for the specified wireless device is established. The mobile terminal device according to claim 8,
The function control means is a portable terminal device that automatically discards data corresponding to a specified wireless device acquired from the outside when authentication for the specified wireless device transitions from an established state to an unestablished state. A method of restricting use of a mobile terminal device that controls use restriction of a predetermined function,
Outputting an authentication start instruction when a specified authentication start operation is performed;
Making an authentication request to an external wireless device based on the authentication start instruction;
Receiving an authentication response to the authentication request from the wireless device;
Based on the received authentication response, determining whether it is from a wireless device capable of permitting release of the use restriction;
Detecting a distance to the wireless device;
Determining that authentication is established when the authentication response is from a wireless device capable of permitting release of the use restriction and the distance from the wireless device is shorter than a first distance;
A method of restricting use of a portable terminal device, comprising: releasing the use restriction of the predetermined function only while authentication by the authentication determination unit is established.

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