JP2010074608A - Mobile field communication apparatus, field communication security system, field communication method and field communication security method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile field communication apparatus having robust security, field communication security system, field communication method and field communication security method. <P>SOLUTION: While prestoring authentication information into an authentication information memory 11, operational change of the mobile field communication apparatus 100 is detected as input information. When the mobile field communication apparatus 100 is in a standby state, it is determined whether the detected input information is matched to the authentication information in the authentication information memory 11. When the input information is matched to the authentication information, the mobile field communication apparatus 100 is changed from the standby state to an execution enabled state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable electric field communication device that performs electric field communication, an electric field communication security system, an electric field communication method, and an electric field communication security method.

2. Description of the Related Art Conventionally, there has been proposed an electric field communication apparatus that induces an electric field based on data to be transmitted to an electric field transmission medium that transmits an electric field and performs data communication by detecting the electric field induced in the electric field transmission medium (patent) Reference 1). And such an electric field communication apparatus can transmit the identification information which identifies this electric field communication apparatus to another electric field communication apparatus by an electric field.
JP 2003-324395 A

  However, since the electric field communication device itself serves as an authentication key, there is a problem that it may be used by a third party due to loss or theft.

  This invention is made | formed in view of the above, and makes it a subject to provide the portable electric field communication apparatus, electric field communication security system, electric field communication method, and electric field communication security method which have strong security.

  The present invention according to claim 1 is a portable electric field communication apparatus capable of performing electric field communication by inducing an electric field from an electrode to an electric field transmission medium, and an authentication information storage means for storing authentication information; A motion sensor that detects a change in operation of the portable electric field communication device as input information, and the input information detected when the portable electric field communication device is in a standby state is included in the authentication information read from the authentication information storage unit. Determining means for determining whether or not they match, and state variable means for changing the portable electric field communication device from the standby state to an executable state when the input information matches the authentication information. Is the gist.

  In the present invention, authentication information is stored in the authentication information storage means, a change in operation of the portable electric field communication device is detected as input information, and detected when the portable electric field communication device is in a standby state. Since it is determined whether or not the input information matches the authentication information stored in the authentication information storage means, and the input information matches the authentication information, the portable electric field communication device is changed from the standby state to the executable state. It is possible to provide a portable electric field communication device having That is, in order to change a portable electric field communication device that has been left for a certain period of time and cannot be used to a usable executable state, the portable electric field communication device must be identical to the authentication information stored in the authentication information storage means. Since it is necessary to change the operation of the electric field communication device for use, even if it is lost or stolen, it is possible to reliably prevent the use by a third party other than the original user who owns the portable electric field communication device.

  According to a second aspect of the present invention, there is provided identification information storage means for storing identification information for identifying the portable electric field communication device, input information detected after changing to the executable state, and the identification information storage. The gist further comprises transmitting means for transmitting the identification information read from the means by means of an electric field from a transmitting electrode.

  According to a third aspect of the present invention, there is provided an electric field communication security system including a portable electric field communication device and an authentication electric field communication device capable of performing electric field communication by inducing an electric field from an electrode into an electric field transmission medium. The portable electric field communication device is carried by a human body as the electric field transmission medium, the authentication electric field communication device is disposed in a device that performs a predetermined operation, and a part of the human body is used as a reception electrode of the authentication electric field communication device. The portable electric field communication device is in contact, the authentication information storage means for storing authentication information, and the identification information storage means for storing identification information for identifying the portable electric field communication device A motion sensor that detects an operation change of the portable electric field communication device as input information, and the first input information detected when the portable electric field communication device is in a standby state. Determination means for determining whether or not the authentication information read from the certificate information storage means matches, and when the first input information matches the authentication information, the portable electric field communication device is put out of the standby state. State variable means for changing to an executable state, the second input information detected after changing to the executable state, and the identification information read from the identification information storage means from the transmission electrode to the authentication electric field communication Transmitting means for transmitting to the device by an electric field, wherein the authentication electric field communication device identifies device operation authentication information storage means for storing device operation authentication information and the portable electric field communication device. Electric field communication device identification information storage means for storing electric field communication device identification information; the second input information and the identification information transmitted via the human body; And receiving means for receiving and determining whether or not the received second input information matches the apparatus operation authentication information stored in the apparatus operation authentication information storage means, and receiving the received Determining means for determining whether identification information matches the identification information for electric field communication apparatus stored in the identification information storage means for electric field communication apparatus; and the second input information is authentication information for apparatus operation. And control means for causing the device to execute the predetermined operation when the identification information matches the identification information for the electric field communication device.

  According to a fourth aspect of the present invention, the portable electric field communication device includes a plurality of portable electric field communication devices, and the control unit of the authentication electric field communication device performs the determinations for the portable electric field communication devices within a predetermined time. When performed, the gist is to cause the apparatus to execute the predetermined operation.

  The present invention according to claim 5 is an electric field communication method performed by a portable electric field communication apparatus capable of performing electric field communication by inducing an electric field from an electrode into an electric field transmission medium, and storing authentication information in an authentication information storage means. A step of detecting the change in operation of the portable electric field communication device as input information, and the input information detected when the portable electric field communication device is in a standby state from the authentication information storage means Determining whether or not the read authentication information matches, and changing the portable electric field communication device from the standby state to an executable state when the input information matches the authentication information; It is summarized as having.

  According to a sixth aspect of the present invention, the identification information for identifying the portable electric field communication device is stored in the identification information storage means, the input information detected after the change to the executable state, and the identification And a step of transmitting the identification information read from the information storage means from the transmission electrode by an electric field.

  According to a seventh aspect of the present invention, there is provided an electric field communication security method including a portable electric field communication device and an authentication electric field communication device capable of performing electric field communication by inducing an electric field from an electrode into an electric field transmission medium. The portable electric field communication device is carried by a human body as the electric field transmission medium, the authentication electric field communication device is disposed in a device that performs a predetermined operation, and a part of the human body is used as a reception electrode of the authentication electric field communication device. A step of storing authentication information in the authentication information storage means by the portable electric field communication device, and storing identification information for identifying the portable electric field communication device in the identification information storage means. Detecting a change in operation of the portable electric field communication device as input information, and detecting the first input detected when the portable electric field communication device is in a standby state. Determining whether or not the information matches the authentication information read from the authentication information storage means; and if the first input information matches the authentication information, A step of changing from the state to the executable state, the second input information detected after the change to the executable state, and the identification information read from the identification information storage means from the transmission electrode to the authentication electric field communication Transmitting to the apparatus by an electric field, and storing the apparatus operation authentication information in the apparatus operation authentication information storage means by the authentication electric field communication apparatus, and identifying the portable electric field communication apparatus Storing the identification information for the electric field communication device to be stored in the identification information storage means for the electric field communication device, and the second input information and the information transmitted through the human body. The step of receiving the identification information via the receiving electrode, and whether or not the received second input information matches the device operation authentication information stored in the device operation authentication information storage means. Determining whether the received identification information matches the identification information for the electric field communication device stored in the identification information storage means for the electric field communication device, and the second input information And a step of causing the device to perform the predetermined operation when the device information matches the device operation authentication information and the identification information matches the electric field communication device identification information. .

  According to the present invention, it is possible to provide a portable electric field communication device, electric field communication security system, electric field communication method, and electric field communication security method having strong security.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a block diagram showing a functional block configuration of the portable electric field communication device according to the first embodiment. The portable electric field communication device 100 includes an authentication information storage unit 11 that stores authentication information, an identification information storage unit 12 that stores identification information for identifying the portable electric field communication device 100, and portable electric field communication. A motion sensor 13 that detects a change in the operation of the apparatus 100 as input information, a determination unit 14 that determines whether the detected input information matches the authentication information, and a process state of the portable electric field communication apparatus 100 is changed. A state variable unit 15, a transmission unit 16 that transmits detected input information and identification information, a CPU 17 that manages the process state of the portable electric field communication device 100, and a communication circuit 18 that induces an electric field in the electric field transmission medium; The electrode 19 is provided.

  The authentication information storage unit 11 stores authentication information used for authentication when starting or resuming use of the portable electric field communication device 100. For example, characters such as “A”, “B”, and “C” , “○”, “△”, “□” and the like, and authentication information composed of symbols, symbols, and the like are stored. In addition, as such authentication information, a combination of simple figures such as “○” rotated clockwise and counterclockwise, specifically, “clockwise 2 times → clockwise 3 times → clockwise 1 time”, etc. Thus, it may be configured by a continuous combination. The identification information storage unit 12 stores identification information that uniquely identifies the portable electric field communication device 100. Such authentication information storage unit 11 and identification information storage unit 12 can be realized using a storage medium such as a memory or a hard disk.

  The motion sensor 13 has a function of detecting an operation change of the portable electric field communication device 100. Specifically, the movement and tilt of the portable electric field communication device 100 are detected by sensing changes in acceleration, magnetism, and the like in the front-rear direction, the left-right direction, and the vertical direction that occur when the portable electric field communication device 100 is operated. It has a function of detecting and outputting contents corresponding to the movement as input information. For example, when the user holds the portable electric field communication device 100 and draws a circle, “◯” is output as the input information. The motion sensor can be turned on / off by a changeover switch. Such motion sensors are used in, for example, bodily sensation games mounted on 905i series mobile phones sold by NTT Docomo.

  The determination unit 14 determines whether the input information detected by the motion sensor 13 matches the authentication information stored in the authentication information storage unit 11 when the portable electric field communication device 100 is in a standby state. It has.

  The state variable unit 15 has a function of changing the process state of the CPU 17 that controls the entire processing in the portable electric field communication device 100. The process state is generally classified into a standby state in which processing cannot be executed, an executable state in which processing can be executed but not executed, and an execution state in which processing is currently executed. can do. The standby state in the present embodiment has a meaning including a sleep state, a dormant state, a logout state, and the like.

  The transmission unit 16 has a function of transmitting the input information detected by the motion sensor 13 after changing to the executable state and the identification information stored in the identification information storage unit 12 from the electrode 19 through the communication circuit 18 by an electric field. I have.

  The communication circuit 18 has a function of inducing the human body as an electric field transmission medium carrying the portable electric field communication device 100 from the electrode 19 and outputting the input information and identification information output from the transmitter 16 to the human body. . FIG. 2 is a circuit configuration diagram showing a circuit configuration of the communication circuit. The communication circuit 18 is connected to the processing apparatus A (corresponding to the dotted line portion shown in FIG. 1) via the interface circuit 51. When the communication circuit 18 receives transmission data (corresponding to the above-described input information and identification information) from the transmission unit 16 via the interface circuit 51 for transmission to the other processing apparatus A ′, After adjusting the signal amplitude of the data, the data is supplied to the second communication electrode 19b functioning as a transmission electrode via the transmission circuit 53.

  When transmission data is supplied from the transmission circuit 53, the second communication electrode 19b induces an electric field corresponding to the transmission data in the electric field transmission medium 60. The induced electric field is transmitted through the electric field transmission medium 60 and received by the receiving electrode of the other processing apparatus A ′.

  On the other hand, the electric field detection optical unit 54 is supplied with the electric field received by the first communication electrode 19a functioning as a reception electrode, and changes the polarization of laser light separately generated in the electric field detection optical unit 54 using the electric field optical technique. After that, it is converted into an electrical signal. This electric signal is supplied with the processing device A through the interface circuit 51 after unnecessary noise is removed by the band limitation in the signal processing circuit 55 and the waveform shaping circuit 56 further shapes the waveform. ing. The first communication electrode 19a and the second communication electrode 19b may be integrated into one electrode 19 to constitute each electrode.

  Next, processing of the portable electric field communication device according to the present embodiment will be described. FIG. 3 is a flowchart showing a processing flow of the portable electric field communication device. It is assumed that portable electric field communication device 100 is in a standby state because it has been left for a certain period of time.

  First, the motion sensor 13 detects input information drawn by the authorized user using the portable electric field communication device 100 as shown in FIG. 4 (step S101).

  Next, the determination unit 14 reads the authentication information from the authentication information storage unit 11, and determines whether or not the input information detected by the motion sensor 13 matches the authentication information (step S102).

  Then, the state variable unit 15 instructs the CPU 17 to change the portable electric field communication device 100 from the standby state to the executable state when the input information matches the authentication information as a result of the determination in step S102. (Step S103). In this state, it is possible to perform electric field communication using the portable electric field communication device 100.

  On the other hand, as a result of the determination in step S102, if the input information does not match the authentication information, the process returns to step S101, and the portable electric field communication device 100 performs steps S101 and S102 until the input information matches the authentication information. Repeat process.

  Thereafter, when the input information is detected by the motion sensor 13 after the portable electric field communication device 100 is changed to an executable state, the transmission unit 16 receives the input information and the identification information stored in the identification information storage unit 12. Is transmitted from the electrode 19 to the human body as the electric field transmission medium 60 through the communication circuit 18 by an electric field (step S104).

  According to the present embodiment, when authentication information is stored in the authentication information storage unit 11, an operation change of the portable electric field communication device 100 is detected as input information, and the portable electric field communication device 100 is in a standby state. It is determined whether or not the input information detected in step 3 matches the authentication information stored in the authentication information storage unit 11. If the input information matches the authentication information, the portable electric field communication device 100 changes from the standby state to the executable state. Therefore, the portable electric field communication device 100 having strong security can be provided. In other words, in order to change the portable electric field communication device 100 that has been left for a certain period of time and cannot be used into a usable executable state, the authentication information stored in the authentication information storage unit 11 is the same. In addition, since it is necessary to change the operation of the portable electric field communication device 100, even if the portable electric field communication device 100 is lost or stolen, it is possible to reliably prevent use by a third party other than the original user who owns the portable electric field communication device 100. It becomes possible.

[Second Embodiment]
FIG. 5 is an overall configuration diagram showing an overall configuration of the electric field communication security system according to the second embodiment. This electric field communication security system includes the portable electric field communication device 100 described in the first embodiment and an authentication electric field communication device 200 that authenticates the unlocking of the safe deposit box 300. A palm electrode 27 a is disposed on the surface of the safe deposit box 300 and a floor electrode 27 b is disposed on the labor floor of the safe deposit box 300. It is connected. Further, it is assumed that portable electric field communication device 100 is carried by a human body as electric field transmission medium 60.

  FIG. 6 is a block diagram showing a functional block configuration of the authentication electric field communication apparatus according to the present embodiment. The authentication electric field communication device 200 stores the safe deposit unlocking authentication information storage unit 21 for storing the safe deposit unlocking authentication information and the electric field communication device identification information for identifying the portable electric field communication device 100. The identification information storage unit 22 for the electric field communication device, the reception unit 23 for receiving each piece of information transmitted from the portable electric field communication device 100, and the received information is the authentication information for unlocking the safe deposit box and the electric field communication device. A determination unit 24 that determines whether or not the identification information matches, a control unit 25 that unlocks the safety deposit box under a certain condition, a communication circuit 26 that induces an electric field in the electric field transmission medium, and a palm electrode 27a The floor electrode 27b is provided.

  The safe deposit unlocking authentication information storage unit 21 stores safe deposit unlocking authentication information to be authenticated when unlocking the locked safe deposit box 300. For example, “A”, “B”, Authentication information including characters such as “C”, figures such as “◯”, “Δ”, “□”, symbols, symbols, and the like is accumulated. In addition, as such authentication information, a combination of simple figures such as “○” rotated clockwise and counterclockwise, specifically, “clockwise 2 times → clockwise 3 times → clockwise 1 time”, etc. Thus, it may be configured by a continuous combination. The electric field communication device identification information storage unit 22 stores electric field communication device identification information for identifying the portable electric field communication device 100. Such a safety deposit box unlocking authentication information storage unit 21 and an electric field communication device identification information storage unit 22 can be realized using a storage medium such as a memory or a hard disk.

  The receiving unit 23 receives input information and identification information transmitted from the portable electric field communication device 100 and transmitted through the human body as the electric field transmission medium 60 via the communication circuit 26 via the palm electrode 27a or the floor electrode 27b. It has a function to receive.

  The determination unit 24 determines whether or not the received input information matches the safe deposit box unlocking authentication information stored in the safe deposit box unlocking authentication information storage unit 21, and the received identification information is stored in the electric field communication. It has a function of determining whether or not it matches the electric field communication device identification information stored in the device identification information storage unit 22.

  The control unit 25 has a function of causing the safe deposit box 300 to be unlocked by, for example, transmitting an unlocking signal when the determination results in the determination unit 24 match.

  Note that the function provided in the communication circuit 18 and the function provided in the portable electric field communication device 100 are the same as those described in the first embodiment, and thus redundant description is omitted here.

  Next, processing of the electric field communication security system according to the present embodiment will be described. FIG. 7 is a flowchart showing a processing flow of the electric field communication security system. Note that steps S201 to S204 are substantially the same as the processes in steps S101 to S104 described with reference to FIG.

  First, the motion sensor 13 of the portable electric field communication device 100 detects input information drawn by the authorized user using the portable electric field communication device 100 as shown in FIG. 4 (step S201). For example, in FIG. 4, “o (circle)” rotated clockwise is drawn.

  Next, the determination unit 14 of the portable electric field communication device 100 reads the authentication information from the authentication information storage unit 11 and determines whether or not the input information detected by the motion sensor 13 matches the authentication information (step). S202).

  Then, the state variable unit 15 of the portable electric field communication device 100 changes the portable electric field communication device 100 from the standby state to the executable state when the input information matches the authentication information as a result of the determination in step S202. Thus, the CPU 17 is instructed (step S203). In this state, it is possible to perform electric field communication using the portable electric field communication device 100.

  On the other hand, if the input information does not match the authentication information as a result of the determination in step S202, the process returns to step S201, and the portable electric field communication device 100 performs steps S201 and S202 until the input information matches the authentication information. Repeat process.

  Thereafter, the above-described user has information that is necessary for unlocking the safe deposit box 300 with his / her hand in contact with the palm electrode 27a disposed on the surface of the safe deposit box 300 or with his / her foot in contact with the floor electrode 27b. Is drawn by changing the operation of the portable electric field communication device 100. For example, in FIG. 5, “□ (square)” in the clockwise direction different from FIG. 4 is drawn.

  Then, the transmission unit 16 of the portable electric field communication device 100 includes the input information detected by the motion sensor 13 after the portable electric field communication device 100 is changed to an executable state and the identification information stored in the identification information storage unit 12. Is transmitted from the electrode 19 to the human body as the electric field transmission medium 60 through the communication circuit 18 by an electric field (step S204).

  Subsequently, the receiving unit 23 of the authentication electric field communication device 200 transmits the input information and the identification information transmitted through the human body as the electric field transmission medium 60 through the palm electrode 27a or the floor electrode 27b through the communication circuit 26. (Step S205).

  Then, the determination unit 24 of the authentication electric field communication device 200 reads the safe deposit unlocking authentication information stored in the safe deposit unlocking authentication information storage unit 21, and the received input information is used for unlocking the safe deposit box. It is determined whether or not the authentication information matches, and the electric field communication device identification information stored in the electric field communication device identification information storage unit 22 is read, and the received identification information matches the electric field communication device identification information. It is determined whether or not to perform (step S206).

  After that, as a result of the determination in step S206, the control unit 25 of the authentication electric field communication device 200 determines that the input information matches the safe deposit box unlocking authentication information and the identification information matches the electric field communication device identification information. Then, an unlock signal is transmitted to the safe deposit box 300 (step S207). Based on this unlocking signal, the safe deposit box 300 is unlocked.

  On the other hand, as a result of the determination in step S206, if the input information does not match the safe deposit box unlocking authentication information or the identification information does not match the electric field communication device identification information, the process is performed without executing step S207. finish.

  In this embodiment, the authentication electric field communication device for authenticating the unlocking of the safety deposit box has been described. However, the authentication electric field communication device can be applied to facilities that require security, machines that need to ensure safety, and the like. For example, an automatic door at the entrance of a condominium, an entrance gate of a movie theater or a playground, a press machine that is highly dangerous for use by general users, and the like can be cited as examples.

  In the present embodiment, the case where there is one portable electric field communication device 100 has been described. However, the present invention can also be applied to the case where a plurality of portable electric field communication devices 100 are used. Specifically, the person A holding the portable electric field communication device 100a and the person B holding the portable electric field communication device 100b both come into contact with the palm electrode 27a or the floor electrode 27b, and the electric field communication device 200 for authentication. The control unit 25 receives the input information and the identification information from the portable electric field communication device 100a and the portable electric field communication device 100b substantially at the same time, and the respective determinations for the input information and the identification information are substantially simultaneous (actually The same effect can be obtained even if an unlocking signal is transmitted to the safe deposit box 300 when the speed of changing the operation of the portable electric field communication device is different within a predetermined time). it can.

  According to the present embodiment, since authentication is performed using not only the identification information of portable electric field communication device 100 but also the input information input by motion sensor 13, it is possible to provide an electric field communication security system with higher security. it can.

It is a block diagram which shows the functional block structure of the portable electric field communication apparatus which concerns on 1st Embodiment. It is a circuit block diagram which shows the circuit structure of a communication circuit. It is a flowchart which shows the processing flow of a portable electric field communication apparatus. It is a state diagram which shows the state which is inputting input information using a portable electric field communication apparatus. It is a whole block diagram which shows the whole structure of the electric field communication security system which concerns on 2nd Embodiment. It is a block diagram which shows the functional block structure of the electric field communication apparatus for authentication which concerns on this Embodiment. It is a flowchart which shows the processing flow of an electric field communication security system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Authentication information storage part 12 ... Identification information storage part 13 ... Motion sensor 14 ... Determination part 15 ... State variable part 16 ... Transmission part 17 ... CPU
DESCRIPTION OF SYMBOLS 18 ... Communication circuit 19 ... Electrode 19a ... 1st communication electrode 19b ... 2nd communication electrode 21 ... Authentication information storage part for safe deposit unlocking 22 ... Identification information storage part for electric field communication apparatuses 23 ... Reception part 24 ... Determination part DESCRIPTION OF SYMBOLS 25 ... Control part 26 ... Communication circuit 27a ... Palm electrode 27b ... Floor electrode 51 ... Interface circuit 52 ... Level adjustment circuit 53 ... Transmission circuit 54 ... Electric field detection optical part 55 ... Signal processing circuit 56 ... Waveform shaping circuit 60 ... Electric field transmission Medium 100, 100a, 100b ... portable electric field communication device 200 ... authentication electric field communication device 300 ... safe deposit box

Claims (7)

In a portable electric field communication device capable of performing electric field communication by inducing an electric field from an electrode into an electric field transmission medium,
Authentication information storage means for storing authentication information;
A motion sensor for detecting change in operation of the portable electric field communication device as input information;
Determining means for determining whether or not the input information detected when the portable electric field communication device is in a standby state matches the authentication information read from the authentication information storage means;
State variable means for changing the portable electric field communication device from the standby state to an executable state when the input information matches the authentication information;
A portable electric field communication device comprising: Identification information storage means for storing identification information for identifying the portable electric field communication device;
Transmitting means for transmitting the input information detected after changing to the executable state and the identification information read from the identification information storage means from the transmission electrode by an electric field;
The portable electric field communication device according to claim 1, further comprising: In an electric field communication security system including a portable electric field communication device capable of inducing an electric field from an electrode in an electric field transmission medium and performing electric field communication and an electric field communication device for authentication,
The portable electric field communication device is carried by a human body as the electric field transmission medium, the authentication electric field communication device is disposed in a device that performs a predetermined operation, and a part of the human body is a reception electrode of the authentication electric field communication device Which is in contact with
The portable electric field communication device is:
Authentication information storage means for storing authentication information;
Identification information storage means for storing identification information for identifying the portable electric field communication device;
A motion sensor for detecting change in operation of the portable electric field communication device as input information;
Determining means for determining whether or not the first input information detected when the portable electric field communication device is in a standby state matches the authentication information read from the authentication information storage means;
State variable means for changing the portable electric field communication device from the standby state to an executable state when the first input information matches the authentication information;
Transmitting means for transmitting the second input information detected after the change to the executable state and the identification information read from the identification information storage means by an electric field from a transmission electrode to the authentication electric field communication device; Have
The authentication electric field communication device comprises:
Device operation authentication information storage means for storing device operation authentication information;
Electric field communication device identification information storage means for storing electric field communication device identification information for identifying the portable electric field communication device;
Receiving means for receiving the second input information and the identification information transmitted via the human body via the receiving electrode;
It is determined whether the received second input information matches the device operation authentication information stored in the device operation authentication information storage means, and the received identification information is for the electric field communication device. Determining means for determining whether or not the electric field communication device identification information stored in the identification information storage means matches;
Control means for causing the device to execute the predetermined operation when the second input information matches the device operation authentication information and the identification information matches the electric field communication device identification information;
An electric field communication security system characterized by comprising: The portable electric field communication device is plural,
Control means of the authentication electric field communication device,
4. The electric field communication security system according to claim 3, wherein, when each of the determinations for the portable electric field communication device is performed within a predetermined time, the device performs the predetermined operation. 5. In an electric field communication method performed by a portable electric field communication device capable of inducing an electric field from an electrode in an electric field transmission medium and performing electric field communication,
Storing authentication information in the authentication information storage means;
Detecting an operation change of the portable electric field communication device as input information;
Determining whether the input information detected when the portable electric field communication device is in a standby state matches the authentication information read from the authentication information storage means;
When the input information matches the authentication information, changing the portable electric field communication device from the standby state to an executable state;
An electric field communication method characterized by comprising: Storing identification information for identifying the portable electric field communication device in identification information storage means;
Transmitting the input information detected after changing to the executable state and the identification information read from the identification information storage means from the transmission electrode by an electric field;
The electric field communication method according to claim 5, further comprising: In an electric field communication security method including a portable electric field communication device capable of inducing an electric field from an electrode in an electric field transmission medium and performing electric field communication and an electric field communication device for authentication,
The portable electric field communication device is carried by a human body as the electric field transmission medium, the authentication electric field communication device is disposed in a device that performs a predetermined operation, and a part of the human body is a reception electrode of the authentication electric field communication device Which is in contact with
By the portable electric field communication device,
Storing authentication information in the authentication information storage means;
Storing identification information for identifying the portable electric field communication device in identification information storage means;
Detecting an operation change of the portable electric field communication device as input information;
Determining whether the first input information detected when the portable electric field communication device is in a standby state matches the authentication information read from the authentication information storage means;
When the first input information matches the authentication information, changing the portable electric field communication device from the standby state to an executable state;
Transmitting the second input information detected after changing to the executable state and the identification information read from the identification information storage means from the transmission electrode to the authentication electric field communication device by an electric field. And
By the electric field communication device for authentication,
Storing device operation authentication information in device operation authentication information storage means;
Storing electric field communication device identification information for identifying the portable electric field communication device in the electric field communication device identification information storage means;
Receiving the second input information and the identification information transmitted via the human body via the receiving electrode;
It is determined whether the received second input information matches the device operation authentication information stored in the device operation authentication information storage means, and the received identification information is for the electric field communication device. Determining whether or not the electric field communication device identification information stored in the identification information storage means matches;
Causing the device to execute the predetermined operation when the second input information matches the device operation authentication information and the identification information matches the electric field communication device identification information;
An electric field communication security method characterized by comprising:

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