JP2009169894A - Computer server authentication center, portable terminal, and method for transmitting authentication content from computer server authentication center - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a computer server authentication center 14 capable of preventing unauthorized use of a stolen or lost portable terminal 12. <P>SOLUTION: The computer server authentication center 14, which transmits an authentication content to the portable terminal 12 transmitting and receiving data by radio communication, comprises: a means which authenticates a user device 10 used by a user by electromagnetic induction pulses when it gets close to the device; a means which receives certification request information from the portable terminal 12 to the authentication center 14 at predetermined intervals, and transmits, when the authentication center 14 receives certification request information, certification content information to the portable terminal 12; and a means which rejects transmission of the certification content information from the authentication center 14 when the authentication center 14 receives theft or loss report information from the user through a communication line or a telephone. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an authentication center of a computer server and a portable terminal.

  More specifically, the present invention relates to a technique for rejecting transmission of certification content information or transmitting an invalid signal from an authentication center when an authentication center receives report information of theft or loss from a portable terminal or a use device.

  Conventionally, a small card-type identification signal transmission unit in which the use restriction device is applied to a mobile phone, 20 is provided with a use restriction release unit, and a mobile phone. The identification signal transmission unit (hereinafter abbreviated as a transmission unit) is a mobile phone. Is a separate and independent card type, and a use restriction release unit (hereinafter abbreviated as a release unit) is built in the mobile phone. However, the release unit may be integrally attached to the outside of the mobile phone.

  The cellular phone is obtained by adding a use restriction circuit as a use restriction means to a conventional general circuit. The transmission unit is used by the owner or user of the mobile phone in a chest pocket or the like and placed in a certain distance range together with the mobile phone. In addition to the card format, the transmission unit may be of any other format as long as it is convenient to carry such as a key.

  Since the mobile phone itself is a general one, its configuration will be briefly described below. The mobile phone includes a transmission system, a reception system, a telephone number input system, and a power supply unit. In the transmission system, voice is converted into a voice signal by a microphone, amplified by a voice amplifier circuit, modulated by a carrier wave signal by a modulation circuit, and further amplified by a transmission amplifier, and then transmitted from a transmission / reception antenna to a telephone station. Sent. The transmission amplifier is provided with a call switch, and when this call switch is operated, a transmission mode is set. In the receiving system, the incoming call signal is amplified by the receiving amplifier, the number is recognized by the number recognition circuit, and then the ring tone is emitted from the speaker through the hook switch from the ring tone generation circuit, and the call is based on this ring tone. When the hook switch is switched, a voice input mode is entered, and the received signal amplified by the receiving amplifier is demodulated as a voice signal by the voice demodulation circuit, and the voice signal is sent to the speaker through the hook switch and reproduced as voice.

  In the telephone number input system, the circuit is connected so that the operation input of the key operation invalid switch, the numeric keypad / function key, and the switch signal are input to the AND gate of the use restriction circuit, and the password input by the numeric keypad / function key is used. When the phone number input mode is set on condition that the switch is operated by the output of the alarm release circuit based on the number and the signal from the switch and the use restriction release signal from the release unit are established, it is input from the numeric keypad / function key The telephone number is sent to the telephone number input circuit through the gate, and transmitted from the transmission / reception antenna through the telephone number generation circuit through the modulation circuit and transmission amplifier.

  The power supply of the power supply unit is operated by the power switch of the mobile phone and supplies power to the circuits of each system, but this power supply may be used in common for the release unit, or Another independent power source may be provided. When used in common, power is always supplied to the release unit even if the power switch of the mobile phone is cut off.

  The transmission unit includes a transmitter that transmits an identification signal including a preset unique code signal from the transmission antenna, and a receiver that receives the confirmation signal sent back from the transmitter of the release unit via the reception antenna. Yes.

  The transmission system for transmitting the identification signal sends out the identification signal set in the identification code memory in response to a command from the transmission / reception control timer, performs FSK modulation (250 MHz) with the carrier wave in the FSK modulation circuit, and then transmits the identification signal from the transmitter. Send out.

  The power supply control circuit and the power supply unit supply power to each unit by closing the switch by a signal from the power supply control circuit.

  A receiving system for receiving the confirmation signal is connected after the receiver. First, the received confirmation signal (250 MHz) is FSK demodulated by the FSK demodulating circuit and sent to the coincidence / addition circuit. The coincidence / adder circuit reads the identification signal stored in the identification code memory in advance, and adds a coincidence point for each bit of the identification signal to determine whether the confirmation signal matches the identification signal. Process.

  The added output signal (pulse compression signal, which will be described later) is output to the threshold processing unit, and the threshold processing unit outputs the output signal as a threshold value (threshold value) set in advance by the threshold setting unit. If the output signal exceeds the threshold, the timing signal is sent to the signal presence / absence determining unit.

  On the other hand, the confirmation signal received by the above-described receiver is also sent to the signal level detection circuit, and a signal representing the signal level detected by this circuit is sent to the signal presence / absence determination unit. The confirmation signal from the FSK demodulator circuit and the identification code signal from the identification code memory are also input to this signal presence / absence determination unit.

  The signal presence / absence determination unit determines whether the confirmation signal and the identification code signal match, and the signal level of the confirmation signal received within a predetermined time t after receiving the timing signal from the threshold processing unit is a predetermined value or more. It is determined whether or not there is an output signal as long as the two determinations are both established. However, if the coincidence determination is established but the signal level is determined to be equal to or less than a predetermined value, an alarm signal is output to the alarm circuit.

  The basic configuration of the release unit is substantially the same as that of the transmission unit, but is partially different, and the following description will focus on the different portions.

  Although the presence / absence of a signal is determined by the signal presence / absence determination unit based on the identification signal sent from the transmission unit, the signal presence / absence determination unit does not output any signal as long as the identification signal is received. If there is no output signal, a use restriction release signal is always generated from the use restriction release signal generation unit. When no identification signal is received, transmission of the release signal from the signal generation unit is stopped by an output signal from the signal presence / absence determination unit. Different points.

  In addition, the power of the power supply unit is not controlled by the transmission / reception control timer, and is always sent to each component unit, and the power supply switch does not cut off the power supply even when the mobile phone power supply is shared or not shared .

  This is because when the identification signal is transmitted from the transmission unit, the transmission is always received by the cancellation unit at any time, and after confirming the presence or absence of the identification signal based on that signal, the confirmation signal is canceled by the command of the transmission / reception control timer This is because it is necessary to always turn on the power supply of the release unit in order to always send back from the transmission system of the unit at a constant interval.

  The other components are basically the same as the transmission unit.

  In the description of each component, the identification signal from the transmission unit is a signal including a preset unique code signal. This identification signal is an M-sequence (Maximum length null sequence) signal followed by a cellular phone phone. And a unique code signal of a number (hereinafter simply referred to as a telephone number). The reason why the M number signal is included in the identification number in addition to the telephone number is that it is convenient for the specific circuit processing for recognizing whether the received signal belongs to the mobile phone when the identification number is received. This is to make a good signal.

  The identification signal is transmitted as an intermittent signal that repeats every arbitrary time interval S seconds (for example, 2000 ms) in units of an M-sequence signal and a telephone number signal. This is to save power and to prevent battery consumption and enable stable long-time transmission. The M series signal may be a C / A code, a P code, a linear FM signal, or the like. Further, the telephone number as the unique code signal may be a signal representing other ID numbers, other owners, and administrator information in devices other than the cellular phone.

The M-sequence signal is a kind of binary pseudo-random signal, and consists of “1” and “0” having a length obtained by subtracting 1 from 2 to the power of n, that is, a length of (2 n −1). For example, if n = 5, the code string is a 31-bit signal. When this M-sequence signal is sent to the coincidence / adder circuit, a pulse compression signal indicated by B is obtained. In this pulse compression, the M-sequence signal as an input signal is compressed by 1/31.

  The number of unique code signals is required for the number of mobile phones sold. If the code length is m bits, 2 m types are possible. For example, if m = 30, about 1 billion types of unique code signals are available. Code signals are possible. In this embodiment, the unique code signal is a power supply number, but other ID numbers may be used. If the M-sequence signal and the unique code signal are stored in the identification code memory in advance as identification signals, unauthorized use at the time of misplacement or theft can be effectively prevented.

  An identification signal is transmitted from the transmission unit and received by the release unit. Based on this, the same signal is sent back as a confirmation signal after a predetermined time from the release unit, and the signal received by the transmission unit is matched and added by the transmission unit. Perform pulse compression with. When the received signal that has received the confirmation signal is demodulated by the FSK demodulation circuit, the first M-sequence signal of the confirmation signal is temporarily stored in the shift register.

  The M-sequence signal written in the shift register is sent to the coincidence / adder circuit, where the M-sequence signal is called out of the stored data stored in advance in the identification code memory, and both M-sequence signals are one for each bit. Compare whether they match, and add the number of matching bits.

  The matched / added signal is output as a pulse compression signal. In this example, the shift register has a 31-bit storage capacity, but the identification code memory has both a 60-bit storage capacity because it stores both the M-sequence signal (31 bits) and the unique code signal (29 bits). Therefore, when processing both M-sequence signals, the data portion of the M-sequence signal is called up.

  When transmitting the identification signal from the transmission unit, when the power switch is turned on, the transmission / reception control timer is set immediately, the switch is closed via the power control circuit, and power is supplied from the power supply unit to each unit.

  When 2 ms elapses after the power supply is turned on, the identification signal is read from the identification code memory according to the instruction of the control timer, modulated by the FSK modulation circuit, and then transmitted from the transmitter via the transmission antenna.

  As described above, the identification signal is transmitted by FSK-modulating a 31-bit M-sequence signal followed by a 29-bit unique code signal indicating a unique telephone number.

  When the transmission signal of the identification signal from the transmission unit is received by the release unit at a predetermined level or higher and the identification signal is recognized as being its own, the same transmission signal as the identification signal is sent back from the release unit, and as a confirmation signal Received. The power supply of the transmission unit is turned on for a total of 18 ms (startup (2 ms) + transmission (6 ms) + lag time (2 ms) + feedback (6 ms) + lag time (2 ms)).

Thereafter, the transmission timing is controlled by the control timer so that the power is turned on at a constant time of, for example, 2000 ms after the first power-on after a predetermined time has elapsed. Even if the signal transmitted by the transmission unit is received by the receiver of the transmission unit at the same time, an alarm signal is not sent to the alarm circuit based on the received signal, and it does not act as an original reception signal. Differentiated.

On the other hand, as described above, when the confirmation signal sent back from the release unit at a predetermined timing is received by the receiver, it is demodulated by the FSK demodulator circuit and then subjected to pulse compression processing by the coincidence / adder circuit. In this pulse compression processing, the M-sequence signal of the confirmation signal is subjected to pulse compression processing, but the signal to be matched / added is in the middle before or after the pulse train of the M-sequence signal is completely written in the shift register. Thus, since the data for each bit partially matches the value of each corresponding bit of the M-sequence signal storage data of the identification code memory, the value of the pulse compression signal always fluctuates.

  However, when data that matches the M-sequence signal stored in its own identification code memory is written to the shift register, the number of bits to be subjected to the coincidence addition processing by the coincidence / adder circuit is about the total bit number “31” of the shift register. If all are satisfied, the pulse compression signal is “31” and the M-sequence signal is completely matched, or at least if the number of bits to be matched / added is “24” or more, both M-sequence signals can be regarded as matching. it can.

  Therefore, the threshold processing unit determines whether the pulse compression processing signal is a threshold (threshold value) set in advance by the threshold setting unit, for example, “24” or more, and if it is determined that the threshold is exceeded, the timing signal Is output to the signal presence / absence determining unit.

  The signal level of the received signal received by the receiver is detected by a signal level detection circuit, and a signal presence / absence determining unit determines whether the signal level is a certain value or more. In this signal level determination, a threshold value of a certain voltage is provided for the received signal of the detection waveform, and if the level is higher than that, it is determined that a signal of a certain level or higher has been received.

This determination is based on the fact that the received signal level decreases in inverse proportion to the square of the distance R when the distance R between the transmission unit and the release unit increases when receiving a signal transmitted with a constant intensity. As one of the determination methods, the above threshold value is determined corresponding to a predetermined distance (for example, 1 m), and when the received signal level is equal to or lower than the threshold value, it is possible to detect that both are separated by a predetermined distance or more. .

  Instead of this determination method, the level of the received signal may be known by A / D converting the detected waveform of the received signal and measuring the voltage level of the received signal.

  The determination of these signal levels is performed symmetrically only for a certain time t (2.9 ms) corresponding to the unique code signal received after the timing signal after threshold processing for the M-sequence signal is sent from the threshold processing section. The reason is that noise and signal levels from other telephones are not detected, and the determination can be made accurately by setting the fixed time specified by the timing signal as the determination section. .

  In addition to the signal level determination, the signal presence / absence determination unit determines whether the unique code signal received after the timing signal is input and FSK modulated matches the unique code signal stored in the identification code memory. This is also done. Therefore, in the signal presence / absence determination unit, it is determined that there is a timing signal input, then a reception signal of a predetermined level is received for a certain time, and the received unique code signal matches the own unique code signal. Then, the release unit exists within a certain distance from the transmission unit, and the signal presence / absence determination unit does not output any signal.

However, even if there is a timing signal input and the unique code signal matches that of its own, if the signal level is below a certain level, the release unit has moved away from the transmitting unit by a certain distance or more. Is output to activate the alarm circuit.

  In the alarm circuit, for example, a voice message “don't leave” is generated by a sound generator to give a warning, and if the transmission unit is in the pocket, the release unit is misplaced or stolen by the warning sound. Gives a warning about leaving.

  In addition to the method of giving a voice message, the warning by the alarm circuit may be a method of giving a warning by some means such as a beeping warning sound or a message “don't leave it” on the display. Any system may be used. Even if a signal other than the confirmation signal of its own identification code signal is received, either or some of the three conditions described above are not satisfied, so the signal presence / absence determination unit does not output an output signal and transmits Needless to say, it does not affect the reception operation of the unit.

  Next, as described above, the operation of the release unit 20 is that power is always supplied from the power supply unit to each component regardless of whether the power switch of the mobile phone is ON or OFF in this unit. When the identification signal is transmitted from the transmission unit, it is received by the receiver of the release unit almost simultaneously.

The received identification signal is demodulated by the FSK demodulating circuit, sent to the coincidence / addition circuit, and the timing signal based on the M-sequence signal is sent from the threshold processing unit to the signal presence / absence determining unit. Further, the signal level of the received signal is detected by a signal level detection circuit, and it is determined whether the signal level is equal to or higher than a certain level within a certain determination time t when the timing signal is sent to the signal presence / absence determining unit. The same.

  In the case of the transmission unit, the signal presence / absence determination unit determines whether or not the transmitted signal matches the own unique code signal stored in advance in the identification code memory during this determination time. Is the same. However, the signal presence / absence determination unit of this cancellation unit does not output any output signal when the three conditions that the signal level is equal to or higher than both the timing signal and the unique code signal in both determinations are met.

  Unless there is this output signal, the use restriction release signal is always output from the use restriction release signal generation section, assuming that the release unit is in the hands of the owner or the user without leaving the transmission unit. Therefore, the mobile phone is always ready for use.

  When a certain time (2 ms in this example) elapses in the signal presence / absence determination processing after the identification signal is received, the transmission / reception control timer is set and received by the signal from the signal presence / absence determination portion at that moment. A signal identical to the identification signal is read from the identification code memory and transmitted through the FSK modulation circuit and the transmitter. This signal is received as a confirmation signal by the transmission unit.

  However, if the release unit moves away from the transmitter unit together with the mobile phone due to misplacement or theft, the signal level becomes lower than a certain level in the signal level detection, and the signal presence / absence determination unit determines that the identification signal has not been received. To do. When this determination is made, an output signal is output from the signal presence / absence determination unit, and the output of the use cancellation signal from the cancellation signal generation unit is stopped, so that the mobile phone cannot be used.

  As described above, in the conventional use restriction device, since the transmission unit is put in a pocket or the like by the owner or the user, the release unit is incorporated into the mobile phone at hand and used as an integral unit. If the mobile phone is separated from the mobile phone by a certain distance with the release unit, the use of the mobile phone is restricted to prevent unintentional unauthorized use, etc., and the owner or user is warned by voice, etc., and the mobile phone is removed from the hand. Can immediately recognize that.

  In addition, although a mobile phone has been described as an example of a conventional device subject to use restriction, there are various other devices such as a word processor, a personal computer, various game machines, an automobile, and a safe. Further, although the case where radio waves are used as the signal transmission medium has been described, ultrasonic waves, light, or the like may be used in addition to this.

  As described in detail above, the conventional use restriction device is composed of an identification signal transmission unit and a use restriction release unit provided in the device subject to use restriction, and both units are put in a pocket etc. Since the target device is restricted to use when the distance is more than a certain distance and the transmission unit gives a warning, if the device leaves the hand due to misplacement or theft, the target device cannot be used and unauthorized use is prevented and transmitted. A noticeable effect that the unit is immediately noticed by the warning of the unit and the subsequent treatment can be performed quickly is obtained (see Patent Document 1).

  Next, the conventional use restriction device shown in FIG. 3 will be described.

  The conventional use restriction device 20 is “applicable to a target device at a certain distance when the mobile phone 18 is approached”. For example, when the safe 22 is approached, the door of the safe 22 is activated. In this case, the long-distance television 24 that is below the electromagnetic wave threshold is “content inactive unless the person himself / herself goes” cannot be used.

  Further, when the automobile 28 detects the approach of the mobile phone 18, the automobile 28 is activated. In this case, the function of “preventing forgetting to inactivate” acts on a long-distance personal computer (for example, the notebook PC 26) below the electromagnetic wave threshold.

Further, when the personal computer (personal computer 32) detects the approach of the mobile phone 18, the personal computer 32 is activated. In this case, the long-distance printer 30 below the electromagnetic wave threshold value has a function of “no printing unless the inactive person goes”.

  Under such circumstances, the conventional use restriction device 20 that detects the approach detection of the mobile phone 18 detects the approach of the user via the mobile phone 18, so that if the mobile phone 18 is stolen or lost, it will be malicious. Even if a third party illegally uses the mobile phone 18, there may be a problem that the owner cannot be regulated. In other words, there has been a problem that even if the owner is illegally used during the period when he / she is not aware of theft or loss, he / she will suffer damage unless the insurance company guarantees it. Furthermore, the present situation is that the authentication information transmitted from the mobile phone 18 does not have even adult identification information for identifying whether the owner is a young man or an adult.

Japanese Patent No. 293276

The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a computer server and a mobile terminal that do not allow unauthorized use of a stolen or lost mobile terminal.

  One aspect of the authentication center of the computer server of the present invention is, for example, an authentication center 14 of a computer server that transmits authentication contents to a portable terminal 12 that transmits and receives data by wireless communication, as shown in FIG. Means for authenticating by means of electromagnetic induction pulses when approaching the user device 10 to be used and certification request information from the portable terminal 12 to the authentication center 14 at a predetermined interval, and when the authentication center 14 receives the certification request information, And a means for refusing to transmit certification content information from the authentication center when the authentication center receives notification of theft or loss from the user via a communication line or telephone. Is the gist.

  Also, one aspect of the portable terminal of the present invention is, for example, as shown in FIG. 1, a portable terminal 12 that transmits and receives data by wireless communication, receives authentication contents from an authentication center 14 of a computer server, and the user A means for authenticating by means of electromagnetic induction pulses when approaching the user device 10 to be used and a certification request are transmitted from the portable terminal 12 to the authentication center 14 at predetermined intervals, and if the certification center 14 receives the certification request, the certification content information is carried The gist is that the authentication center 14 rejects the transmission of the certification contents when the authentication center 14 transmits the theft or loss report information from the means received by the terminal 12 and the communication line or telephone from the user.

  If comprised in this way, the authentication center 14 or the portable terminal 12 of this invention can provide the authentication center 14 and the portable terminal 12 of a computer server which do not use the stolen or lost portable terminal 12 illegally.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an aspect when the portable terminal 12 is stolen or lost according to the embodiment of the present invention. An authentication center 14 of a computer server that transmits authentication contents to a portable terminal 12 that transmits and receives data by wireless communication, and means for authenticating by an electromagnetic induction pulse when the user approaches the utilization device 10 (stored in the computer server) (First program) and means (computer) for receiving certification request information from the portable terminal 12 to the authentication center 14 at predetermined intervals, and transmitting the certification content information to the portable terminal 12 when the authentication center 14 receives the certification request information. (Second program stored in the server) and means for rejecting transmission of the certification content information from the authentication center 14 when the authentication center 14 receives theft or loss report information from the user via a communication line or telephone ( A third program stored in the computer server). The certificate content information may be encrypted “key information”.

  The mobile terminal 12 according to the embodiment of the present invention is a mobile terminal 12 that transmits and receives data by wireless communication. The mobile terminal 12 receives authentication content from the authentication center 14 of the computer server, and transmits it to the user device 10 used by the user. When approaching, a means for authenticating by an electromagnetic induction pulse (first program stored in a computer server) and a certification request are transmitted from the portable terminal 12 to the certification center 14 at a predetermined interval, and the certification center 14 receives the certification request When the authentication center 14 transmits the theft or loss report information from the user (second program stored in the computer server) by the portable terminal 12 and the communication line or telephone from the user, Means (a third program stored in the computer server) for rejecting the transmission of the certification contents from the authentication center 14 A portable terminal characterized by being equipped.

  FIG. 2 is a normal block diagram of the authentication center 14 and the portable terminal 12 according to the embodiment of the present invention. The authentication center 14 of the computer server that transmits authentication contents to the portable terminal 12 that transmits and receives data by wireless communication automatically authenticates by electromagnetic induction pulses when the user approaches the utilization device 10 used by the user (stored in the computer server). (1st program) and means for transmitting certification content information to the portable terminal 12 when the certification request information is received from the portable terminal 12 to the authentication center 14 at a predetermined interval and the certification center 14 receives the certification request information ( A second program stored in the computer server) and means for refusing to transmit the certification content information from the authentication center 14 when the authentication center 14 receives the report of theft or loss from the user via a communication line or telephone. However, in the normal case, when the authentication center 14 receives the certification request information, it carries the certification content information. It is configured to send to the end 12.

  With this configuration, the authentication center 14 transmits the authentication information to the mobile terminal 12 at “normal time” and restricts (for example, transmits an invalid signal) or rejects the transmission of the authentication information at “when stolen or lost”. I can do it. In the present invention, it goes without saying that the receiving side of the authentication information may be the mobile terminal 12 or the utilization device 10.

  Moreover, the utilization apparatus 10 can be applied to vending machines such as drinking water, cigarette vending machines, railway automatic ticket gates, ATMs (automatic cash deposits and payment machines), and cash registers of convenience stores. In particular, in the case of a “legal” cigarette vending machine for minors, there is an advantage that an identification code for identifying an adult can be added.

  Furthermore, in ATM, since identity verification and automatic identification of an account can be performed, an ATM that has detected the proximity of the mobile terminal 10 can automatically identify an account, so that the owner does not need to perform any troublesome operations. Since these processes can be performed only by selecting and operating the “transfer” or “drawer” icons, there is also an advantage that the ATM operation time can be shortened as compared with the prior art.

  Note that the actions and effects described in the embodiments of the present invention only list the most preferable actions and effects resulting from the present invention, and the actions and effects according to the present invention are included in the embodiments of the present invention. It is not limited to what has been described.

The block diagram of the authentication center concerning embodiment of this invention. The block diagram of the authentication center concerning embodiment of this invention. The figure which shows the conventional use restriction apparatus. The figure of PCB mounted in the server.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 User equipment 12 Portable terminal 14 Authentication center 16 Theft or loss notification means.

Claims (5)

  An authentication center of a computer server that transmits authentication contents to a portable terminal that transmits and receives data by wireless communication, and that is configured to authenticate by an electromagnetic induction pulse when approaching a utilization device used by a user, from the portable terminal or the utilization device Means for transmitting certification request information to the authentication center at predetermined intervals, and when the authentication center receives the certification request information, means for transmitting certification content information to the portable terminal or the using device; and a communication line or telephone from the user And a means for rejecting transmission of certification content information or transmitting an invalid signal from the authentication center when the authentication center receives the report information of theft or loss. .   A portable terminal for transmitting and receiving data by wireless communication, wherein authentication content is received from an authentication center of a computer server and authenticated by an electromagnetic induction pulse when approaching a user device used by a user; from the portable terminal to the authentication center Means for transmitting the certification request to the certification center at a predetermined interval, and when the certification center receives the certification request, the portable terminal receives certification content information from the certification center, and the certification center via the communication line or telephone from the user And a means for causing the authentication center to refuse the transmission of the proof content or to transmit an invalid signal when the theft transmits the report information of theft or loss.   An authentication center of a computer server that transmits authentication contents to a portable terminal or a user device that transmits / receives data by wireless communication, and means for authenticating by an electromagnetic induction pulse when the user approaches a user device, the portable terminal or the Means for receiving certification request information from the use device to the authentication center at predetermined intervals, and when the authentication center receives the certification request information, means for transmitting the certification content information to the portable terminal or the use device, and communication from the user Means for rejecting transmission of certification content information or transmitting an invalid signal from the authentication center to the mobile terminal or the user device when the authentication center receives the theft or loss report information via a line or a telephone; An authentication center for a computer server, comprising:   Means for receiving / transmitting data by wireless communication or wired communication, receiving authentication contents from an authentication center of a computer server, and authenticating by means of electromagnetic induction pulses when a portable terminal carried by a user approaches the utilization apparatus; Means for transmitting a certification request from a terminal to the authentication center via the usage device at a predetermined interval, and when the authentication center receives a certification request from a user, the usage device receives certification content information; Means for rejecting transmission of certification content or transmitting an invalid signal from the authentication center to the user device when the authentication center transmits the theft or loss report information of the mobile terminal via a communication line or a telephone; Use device characterized by comprising.   A method of transmitting authentication contents from a certification center of a computer server to a portable terminal that transmits and receives data by wireless communication, wherein the portable terminal is authenticated by an electromagnetic induction pulse when approaching a utilization device used by the portable terminal carried by the user, When the certification center receives the certification request information from the authentication center at a predetermined interval, and the certification center receives the certification request information, the certification content information is transmitted to the user device, and the authentication center is transmitted from the user via a communication line or telephone. Including the step of rejecting transmission of certification content information or transmitting an invalid signal from the authentication center to the user device when receiving information on theft or loss of the portable terminal. Sending from the server authentication center.