JP2005307456A - Lock system, personal digital assistant, server, and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase security by effectively utilizing the data communication function of a personal digital assistance when the personal digital assistant with a non-contact IC card function is used for unlocking. <P>SOLUTION: A common password is stored in the personal digital assistant 10 and a home server 300, and when the personal digital assistant 10 nears a door 30, the password stored in the personal digital assistant 10 is read by a door side reader/writer part 32 by utilizing the non-contact IC card function added to the personal digital assistant 10. When the read password matches the password stored in the home server 300, the home server 300 unlocks the locking of a lock mechanism 31. When the personal digital assistant is missing, the password of the missing personal digital assistance is validated by updating the password of those personal digital assistants other than that personal digital assistant and the home server. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lock system that unlocks an electronic lock using a portable terminal having a data communication function and a non-contact IC card function.

  Various systems have been proposed and put into practical use for locking and unlocking doors for home security. In addition to unlocking using a key with a general mechanical structure, unlocking electronic locks using biometrics authentication using password input via push buttons, matching patterns such as fingerprints, voiceprints, irises and veins is known. .

  In recent years, entrance / exit management of ticket gates using traffic commuter passes using contactless IC cards that can perform card-based communication with an external reader / writer unit has been put into practical use. Entry / exit management is also being carried out by using employee ID cards that incorporate IC cards.

Patent Document 1 discloses a lock system that transmits an identification signal from a portable terminal and that unlocks when the identification signal matches an identification signal stored in a receiving device connected to a door provided with an electronic lock. . This can be realized by adding a non-contact IC card function to the mobile phone.
JP 2002-339608 A

  With regard to locking / unlocking doors at home or the like, the conventional unlocking method using a key having a mechanical structure has a problem that the door is unlocked by an unauthorized action by an operation such as so-called picking. The method of unlocking by inputting a password has a problem that the password is forgotten or leaked to others. The method of combining biometric authentication with an electronic lock is considered to have a high authentication effect, but there is a problem that the cost is relatively high at present.

  Those that use a mobile terminal with a non-contact IC card function for unlocking are advantageous in terms of cost because they are considered to have a wide variety of uses, but when the terminal is lost or stolen, The terminal may be used illegally by a third party.

  The present invention has been made in such a background, and an object thereof is to effectively use the data communication function of the mobile terminal when the mobile terminal to which the non-contact IC card function is added is used for unlocking. An object is to provide a lock system, a portable terminal, a server, and a computer program that can improve security.

  The lock system according to the present invention includes a lock mechanism including an electronic lock attached to an object to be locked, a portable terminal having a data communication function and a non-contact IC card unit and storing a password for unlocking, and the object to be locked. Wireless communication means that is installed on the side and performs wireless data communication with the non-contact IC card unit, has a data communication function and stores an unlocking password, and the unlocking password and the wireless communication means And the unlocking control means for comparing the password obtained from the portable terminal side and unlocking the locking mechanism when the two passwords match. Each of the portable terminal and the unlocking control unit has a function of updating the unlocking password currently stored in itself with the unlocking password given from the outside by the data communication function.

  The non-contact IC card unit wirelessly outputs an unlocking password and instructs unlocking of the object to be locked. On the other hand, the portable terminal and the unlock control means transmit and receive the unlock password by the data communication function, and update the unlock password.

  By updating the unlocking password, the unlocking password stored in the unlocking control means and the unlocking password of the specific mobile terminal are made inconsistent, thereby unlocking the specific mobile terminal. Can be invalidated.

  The unlocking password can be transmitted and received by e-mail. This email is preferably encrypted.

  Separately from the comparison of the unlocking password, there may be provided means for performing personal authentication between the non-contact IC card part of the portable terminal and the unlocking control means. Thereby, double security is applied to unlocking.

  The portable terminal according to the present invention includes a data communication unit that transmits and receives data via a communication network, a storage unit that stores at least an unlocking password, and an unlocking password that is obtained through the data communication unit. Password updating means for updating the unlocking password stored in the means, and a non-contact IC card function for performing short-range wireless communication by radio, and the storage means at the time of short-range wireless communication with an external reader / writer unit And a non-contact IC card unit that wirelessly outputs the unlocking password stored in the card.

  The server according to the present invention includes a data communication unit that transmits and receives data via a communication network, a storage unit that stores at least an unlocking password, and an unlocking password that is stored in the storage unit. The password updating means for updating with the unlocking password obtained via the password and when the unlocking password is received from the outside, the unlocking password is compared with the unlocking password stored in the storage means And a control means for outputting an unlocking instruction when both unlocking passwords coincide with each other.

  The computer program according to the present invention is a computer program executed in a mobile terminal having a data communication function for transmitting and receiving data via a communication network and a non-contact IC card function. The computer program includes a step of monitoring reception of an e-mail, a step of checking whether the e-mail is an e-mail instructing a change of the unlocking password when the e-mail is received, and an unlocking password. Extracting the unlocking password from the received contents of the e-mail instructing to change the password, updating the unlocking password stored in the memory with the extracted unlocking password, and the non-contact IC A step of reading out the unlocking password from the memory and outputting it wirelessly when an unlocking instruction is issued by the card function.

  In mobile terminals that use the contactless IC card function for unlocking, by effectively using the data communication function, it is possible to connect to the target mobile terminal, etc. without having to choose the location and time as necessary within the range where communication is possible The unlocking password can be changed remotely. Thereby, the unlocking function of a specific portable terminal can be stopped relatively easily and quickly.

  By storing the unlocking password in the portable terminal and automatically reading out and using it when using the non-contact IC card function, the user does not need to store the unlocking password. .

  Apart from comparing passwords for unlocking, it is possible to provide double security for unlocking by providing means for personal authentication between the contactless IC card part of the mobile terminal and the unlocking control means. Become.

  There are a wide variety of uses for portable terminals to which a non-contact IC card function is added, and various uses for home servers are also conceivable. Therefore, the portable terminal can be realized at a lower cost than those intended only for unlocking doors and the like.

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

  FIG. 1 is a diagram showing a schematic configuration of the lock system of the present invention. This system includes, as an example of an object to be locked, a door 30 of a house including a lock mechanism 31 including an electronic lock that can be locked and unlocked by electronic control and a reader / writer unit 32 of a non-contact IC card. The reader / writer unit 32 is connected to exchange predetermined information, and the home server 300 that controls the lock mechanism 31 and the reader / writer unit 32 perform wireless communication using a non-contact IC card function. In addition, a plurality of portable terminals 10a to 10d that perform data communication with the home server 300 by means such as electronic mail are provided. As the non-contact IC card technology, for example, “FeliCa” (registered trademark of Sony Corporation) developed by Sony Corporation can be used.

  The reader / writer unit 32 only needs to be provided in the vicinity of the door 30 within a range where short-range wireless communication of a non-contact IC card is possible, and is not necessarily attached to the door 30. The home server 300 according to the present embodiment has a function of transmitting / receiving e-mail via a communication network and also functions as an unlocking control unit that controls at least the unlocking operation of the lock mechanism 31. Of course, the home server 300 may be used together for control of another control target (not shown). The mobile terminal 10 (generally 10a to 10d) has a function of performing at least data communication such as e-mail by radio wave communication via a mobile phone base station or the like, and a short distance by a non-contact IC card function. It has a function of performing data communication by radio (in this example, radio waves).

  In the present embodiment, it is assumed that the plurality of mobile terminals 10a to 10d are owned by members of an organization (for example, a family) sharing a house or a room provided with the door 30, for example. The non-contact IC card is provided with a personal authentication function. When each portable terminal to which the non-contact card function is added approaches the reader / writer unit 32, the reader / writer unit 32 or the home server 300 performs an authentication process based on the authentication information. By doing so, it is possible to check whether or not the owner is a valid user. As a result, only the registered specific non-contact IC card (and thus the portable terminal incorporating the function) is allowed to unlock the specific lock mechanism 31. For this purpose, an initial registration work is necessary, but the registration work itself is known and is not directly related to the present invention, so it will not be described in detail here. In the present embodiment, in addition to the first authentication function, a second authentication function using a password is employed. This password (PW1) is notified to each member's mobile terminal and home server by using a data communication function of the mobile phone, here, an e-mail function, and is stored in a predetermined storage area.

  In the embodiment, the password is encrypted so that the password is not browsed in the course of communication. As an encryption method, it does not matter whether the data is encrypted in units of data or files constituting the password, or is encrypted in units of mail. The password stored in the portable terminal according to the present invention does not need to be keyed by the user at the time of use, and is automatically used.

  Sending emails for password notification is usually considered to be normally done from any member's mobile terminal or mail server, but email is sent to each mobile terminal and home server. It can also be performed from any electronic device that can be used (for example, a personal computer). In any case, in order to prevent a third party from changing a password illegally using a lost mobile terminal, another user authentication may be performed to create and send a password change email. preferable. This other user authentication is generally considered to use the second password, but if the function of the mobile terminal permits, another authentication method such as fingerprint authentication may be used. Further, as yet another user authentication, the side receiving the password change mail determines whether or not the sender (mail address) of the mail is a predetermined person, and if so, the password is changed. Change emails can be considered valid. In this case, mail from other senders is invalid even if it is a password change mail. As a result, the password change mail can be transmitted only from a limited terminal or user account, but the security level is further improved.

  Data communication with the reader / writer unit 32 is started by holding (approaching) a portable terminal having a non-contact IC card function registered for unlocking over the reader / writer unit 32 of the door 30. Personal authentication and password verification in this embodiment. When the personal authentication result is OK and the unlocking password stored in the mobile terminal matches the unlocking password stored in the home server, the lock mechanism 31 is instructed by an instruction from the home server 300. Is unlocked (that is, unlocked).

  In addition, the locking aspect of the lock mechanism 31 in the present embodiment is not particularly limited. Arbitrary modes such as manual locking, automatic locking when the door 30 is closed, locking using the non-contact IC card function of the mobile terminal, locking according to an instruction from the home server 300, and combinations thereof can be adopted. . For automatic locking or the like when the door 30 is closed, an existing door opening / closing sensor is used although not particularly shown. Switching between unlocking and locking operations using the contactless card function of the mobile terminal can be performed based on whether or not the lock mechanism 31 is currently in the locked state. It is not necessary to use a password when locking.

  As shown in FIG. 2, when it is desired to stop the unlocking function of a specific member's mobile terminal 10 (here, 10c) due to loss or the like, for example, a mobile terminal other than the mobile terminal and a home The password is updated by transmitting a password change mail including a new password (PW2) to the server. This means that for a mobile terminal that does not receive a new password, the password has been invalidated. That is, since the password is not updated only for the mobile terminal 10c that wants to stop the unlocking function, the mobile terminal does not match the password, and the lock mechanism 31 cannot be unlocked. Only the person who sent the password change email can be unlocked. The number of the mobile terminals 10 for which the unlocking function is desired to be stopped is not limited to one, but may be a plurality.

  Theoretically, the same purpose can be achieved by changing the password by wirelessly outputting a password different from the current one only to the mobile terminal whose unlocking function is to be stopped. However, it may be assumed that the password cannot be changed for a mobile terminal that has left the hands of a legitimate user, such as by taking measures such as stopping the telephone communication function. Therefore, in this embodiment, the passwords of terminals other than the portable terminal whose home unlocking function is to be stopped and the home server are updated. However, the present invention does not exclude changing the password only for the portable terminal whose unlocking function is desired to be stopped.

  FIG. 3 shows a block diagram of a mobile phone as an example of the mobile terminal 10 in which the non-contact IC card function of the present invention is mounted.

  The portable terminal 10 is configured with a control unit 5 as a center, to which a digital signal processing unit 3, a display unit 6, an operation unit 7, an external I / F unit 8, and a non-contact IC card unit 20 are connected. The The control unit 5 is a main unit for realizing the function of the mobile phone, and is configured by a CPU, an EEPROM, a flash ROM, an SRAM, and the like (not shown). In the present embodiment, the control unit 5 further includes a card interface module 51 for exchanging commands and data with the non-contact IC card unit 20.

  The digital signal processing unit 3 is connected to an audio input unit 1 to which a microphone 15 is connected, an audio output unit 2 to which a speaker 16 is connected, and an RF input / output unit 4 to which an antenna 12 is connected. This is a part for performing signal decoding and the like, and is configured by dedicated circuits such as convolutional coding, slot interleaving, delay detection, convolutional decoding, etc. with a DSP (Digital Signal Processor) as the center. The audio input unit 1 is a part that converts an analog audio signal from the microphone 15 into a digital signal, and includes a microphone amplifier, a filter, an A / D converter, and the like. The audio output unit 2 is a part for driving a received digital audio signal to a speaker, and includes a D / A converter, a filter, a speaker amplifier, and the like. The RF input / output unit 4 is a part that performs high-frequency transmission / reception, and includes a quadrature modulator, a gain amplifier, a power amplifier, a diversity, a mixer, an IF demodulator, and the like.

  The display unit 6 is a part that displays and outputs information to the user, and includes an LCD driver, an LCD display device, and the like. However, the display device is not limited to the LCD. The operation unit 7 is a part for the user to input operation information to the mobile terminal 10, and is configured with a keyboard, a JOG dial, and the like. The external I / F unit 8 is a part that provides an interface with an external device, and includes a communication interface circuit, a 16-pin connector, and the like. The power supply unit 9 is a part that generates and supplies power necessary for each block based on the battery power supply, and includes a power supply circuit, a battery charging circuit, an overcurrent overvoltage protection circuit, and the like.

  The non-contact IC card unit 20 (usually an IC) is a rewritable non-volatile memory that is connected to the card interface module 51 of the control unit 5 and holds a dedicated CPU 21 and data and programs therein. A flash ROM (MEM) 22, a reader / writer (R / W) module 23, and other interfaces (not shown) are provided. The non-contact IC card unit 20 exchanges commands and data with the reader / writer unit 32 of the door 30 via the antenna 11 for wireless communication of the non-contact type IC card. In the present embodiment, the control unit 5 or the CPU 21 constitutes password update means in the terminal of the present invention.

  The card interface module 51 is incorporated as a part of the control unit 5 and is a software module that combines a user interface between the user and the non-contact IC card unit 20 and a non-contact IC card interface.

  In the present embodiment, when the portable terminal approaches the external reader / writer unit 32, it is stored in the memory 22 in the non-contact IC card unit 20 so that the non-contact IC card unit 20 can immediately output the unlocking password. (However, it can also be stored in the memory on the mobile terminal body side.)

  The reader / writer unit 32 of the door 30 is for exchanging commands and data with the non-contact IC card unit 20. The reader / writer unit 32 of the door 30 transmits a predetermined radio wave signal constantly or periodically, receives necessary data from the mobile terminal side that has received the signal, performs personal authentication and performs password verification. Is called.

  FIG. 4 shows an outline of the hardware configuration of the home server 300. The CPU 310 constituting the control means and password update means in the present invention executes a control program such as an OS (Operating System) and various application programs, and controls each part of the server. The ROM 311 stores fixed data among programs executed by the CPU 310 and calculation parameters. The ROM 311 may include a rewritable nonvolatile memory as described above. The RAM 312 provides a work area for the CPU 310 and a temporary storage area for data. The ROM 311 and the RAM 312 are connected to the CPU 310 via the bus 330. An input device 314 such as a keyboard, a display device 315 such as a CRT and a liquid crystal display, and an external storage device 316 such as a hard disk device, a magneto-optical recording device, and a CD-ROM are connected to the bus 330 via an interface 313. When the role of the ROM 311 is replaced by the external storage device 316, the ROM 311 is not essential. The bus 330 is connected to a communication network such as the Internet via the communication unit 320. Further, it is connected to the lock mechanism 31 and the reader / writer unit 32 via the input / output interface unit 318. The area for storing the password in the present embodiment is stored in a predetermined area of the RAM 312, the ROM 311, or the external storage device 316.

  FIG. 5 shows an example of the contents of the password change mail 400 in the present embodiment. As usual, the mail is composed of a destination (To) 401, a sender (From) 402, a subject (Sub) 403, and a body (Body) 404. In the present embodiment, the password change mail 400 and other mails are identified by whether or not a predetermined keyword (passwordchange in the example in the figure) is described in the subject 403. In the text 404, the actual password is entered. This mail is preferably sent encrypted. Instead of describing the keyword in the subject 403, the keyword may be described in the text 404. Further, instead of describing the password in the text 404, it may be described in the subject 403, or a file describing the password may be attached to the attached document of the mail. In this case, it is desirable to encrypt the attached file. In any case, what should be described and what is to be described may be determined in advance.

  Although the password change mail as shown in FIG. 5 can be created on the normal mail creation screen, a special user interface screen 600 as shown in FIGS. 6 and 7 is provided on the portable terminal and this screen is used. By doing so, you may make it convenient for the user unfamiliar with mail preparation.

  FIG. 6A is a screen for designating a partner terminal whose password is to be changed. In this example, an example of using an address book (phone book) in a terminal is shown. Normally, the name and mail address of the other party are registered in the address book. Therefore, as shown in FIG. 6B, the user can be specified by including the other party's options in the pull-down menu 601 or the like. When a partner is selected from the menu, the mail address associated with the partner is confirmed from the address book and set as the destination of the password change mail. By repeating this process a plurality of times, a plurality of opponents can be designated as the destination. For an unregistered partner, a mail address can be directly entered in the mail address input field 602.

  FIG. 7 shows an example of the password input screen 610 displayed after the designation of the partner on the screen of FIG. 6 is completed. On this screen, the user inputs alphanumeric characters constituting the password in the input field 611. This entered password is entered in the body of the password change email. It should be noted that the sender's email address is automatically entered in the sender field 402 of the password change email 400, and the predetermined keyword “passwordchange” is automatically entered in the subject 403 column. .

  FIG. 8 is a flowchart showing processing and communication procedures of the portable terminal 10, the reader / writer unit 32, and the home server 300 for key information collation in the present embodiment.

  When the terminal 10 approaches the door side reader / writer unit 32, the reader / writer unit 23 of the terminal 10 detects a predetermined signal emitted from the door side reader / writer unit 32 via the antenna 11 (S11), and exchanges predetermined information. Thus, personal authentication is performed (S12, S21). For that purpose, for example, the identification information unique to the user (terminal 10 or non-contact IC card unit 20) stored in the terminal is collated with a plurality of identification information registered in the home server 300, and matching identification information exists. Confirm whether or not to do.

  If the authentication result is OK (S13, S22), the terminal 10 transmits the password held by itself to the home server 300 (S14), and the home server 300 receives this (S23). The home server 300 compares the received password with the password stored by itself (S24). If the two passwords do not match (S25), an error notification is given to the terminal 10 without issuing an unlocking instruction to the lock mechanism 31 (S26). If the passwords match, an unlocking instruction is issued to the lock mechanism 31 (S27), and the terminal is notified that the unlocking request has been successfully received (S15). The terminal notifies the user of the error notification and the OK notification in different forms by display or sound. Instead of or in addition to the notification at the terminal (S15), notification by sound or the like may be performed on the lock mechanism 31 or reader / writer unit 32 side.

  FIG. 9 is a flowchart showing an operation example of a plurality of terminals and a home server when changing a password. Here, as the terminal 10, only two terminals of the terminal 10a and the terminal 10b are shown, but more terminals may be involved. Moreover, although the example which transmits the password change mail from a member's terminal is shown, as long as there is no problem in user authentication (S32) mentioned later, it is also possible to transmit from the arbitrary terminals which have a mail function.

  Now, it is assumed that the user of the terminal 10a transmits a password change mail to the terminal 10b and the home server 300. The user of the terminal 10a activates an application for the predetermined operation and inputs an instruction to change the password (S31). Here, in this embodiment, in order to allow only a user having a predetermined authority to issue a password change mail, user authentication is performed locally at the terminal (S32). As the user authentication, another password can be used as described above, or another authentication method such as fingerprint authentication can be used if the function of the portable terminal permits. As a premise for this, it is necessary to register the user authentication password, fingerprint, and the like in step S32 in advance in each portable terminal. This operation is performed by a person with a predetermined authority.

  If the user authentication is OK, an input of the changed password (for unlocking) is accepted (S34). As described above, an encrypted mail including this password is created (S35). The destination of this mail is the terminal and home server that are subject to password update, and the subject is sent as a predetermined keyword as described above (S36). When the terminal that created this mail is also included in the password update target, the password of the own terminal can be changed by the same mechanism as other terminals by including the mail address of the own terminal in the destination. In the example of the password change mail shown in FIG. 5, the mail address of the own terminal is included in the destination 401. However, instead of this, the password change in the own terminal may be executed together with the password change mail creation in the password change process. In this case, it is not necessary to include the mail address of the own terminal at the destination.

  The terminal 10b preferably executes the following processing when receiving mail as a so-called standby application as a resident application. That is, when a password change mail is received (S41), it is determined whether this mail is an instruction for password change (S42). In the above example, this can be judged by whether or not a predetermined keyword exists in the subject of the mail. In this example, next, the sender is checked as described above (S43). This can be done by checking whether or not the mail address of the sender 402 matches the mail address scheduled (stored) in advance on the receiving side. If this authentication result is OK (S44), the password is restored from the encrypted text in the mail or from the encrypted file attached to the mail (S45). With this restored password, the current unlocking password stored in the memory 22 (FIG. 3) in the non-contact IC card is updated (S46). In the present embodiment, an example in which a password for unlocking is stored in a memory in a non-contact IC card is shown, but it may be stored in another memory in the terminal. When the password update is completed, the password change mail is deleted (S47). Although this erasure is not essential, the erasure can prevent the current password from being viewed illegally and can increase the storage capacity. After deleting the mail (or before deleting), the user is notified that the password has been changed (S48). This notification can be performed, for example, by displaying a message as shown in FIG. 10 on the display screen 620 of the terminal.

  Note that, at the terminal, when receiving the password change mail, prior to the password change, the user may be informed so as to obtain the user's consent.

  On the other hand, in the home server 300, a resident application is preferably activated, and a process similar to the above process in the terminal is executed when a mail is received. That is, when a password change mail is received (S51), it is determined whether this mail is an instruction to change the password (S52), and the sender is further checked (S53). If this authentication result is OK (S54), the password is restored from the encrypted mail body or from the encrypted file attached to the mail (S55). With this restored password, the current unlocking password stored in the storage device (the rewritable memory or storage device in FIG. 4) is updated (S56). When the password update is completed, the password change mail is deleted (S57). In addition, the server administrator is notified that the password has been changed (S58).

  FIG. 11 shows a specific example of changing the unlocking password in the system shown in FIG. First, it is assumed that the password PW1 is stored in the terminals 10a, 10b, 10c and the home server at time t0. At this time, the terminal 10d is not yet registered as a member. Since the terminal 10d is newly added as a member at the time t1, by transmitting a password change mail with the password as the new password PW2 from any terminal (for example, the terminal 10a) or the home server, to all terminals and the home server The terminal 10d can also be used as a key for unlocking. Unlike the above, the terminal 10d can also be used as an unlocking key by sending a password change mail with the password PW1 to the terminal 10d at time t1. However, in this case, since it is necessary to confirm what password is currently used, it is preferable to update the passwords of all terminals and home servers to new ones.

  It is assumed that the terminal 10c is lost at time t2. At this time, a password change mail with a new password PW3 is transmitted to any terminal or other terminals (terminals 10a, 10b, 10d) excluding the terminal 10c and the home server 300 from the home server. As a result, the destination password is updated to the password PW3. The password of the terminal 10c that is not the destination of the mail remains the old password PW2, and even if the terminal is moved close to the door and unlocked, it does not match the password PW3 stored in the home server. Can not be unlocked.

  Thereafter, when the terminal 10c returns to the right user's hand, a password change mail with the password as the new password PW4 is transmitted to all terminals and the home server, whereby the key combination function of the terminal 10c can be restored.

  The preferred embodiments of the present invention have been described above, but various modifications and changes other than those mentioned above can be made.

  For example, it is preferable to execute personal authentication by the non-contact IC card function in steps S12 and S21 in FIG. 8, but this is not necessarily an essential element in the present invention. In this case, security is not double, but only password verification. However, compared to the conventional password usage mode, it is not necessary to enter the user's password when using it, and it is easy to change the password. There are advantages.

  In the above-described embodiment, locking / unlocking of a door of a house has been described. However, the present invention is not limited to application to a door of a house, a building, or the like, and is applied to any lock target such as a car or a storage device. It is possible.

  The case where there are multiple mobile terminals in the lock system has been explained, but even if there is only one mobile terminal, the unlock function of the mobile terminal is disabled by changing the unlock password for the home server when the mobile terminal is lost. It is possible to Therefore, the number of portable terminals in the present invention is not limited to a plurality.

It is a figure showing a schematic structure of a lock system of the present invention. It is explanatory drawing of the update of the password which stops an unlocking function about the portable terminal of a specific member by transmitting the password change mail containing a new password with respect to portable terminals other than the said portable terminal, and a home server. It is a block block diagram of the mobile telephone as an example of the portable terminal which mounted the non-contact IC card function of this invention. It is a block diagram which shows the outline of the hardware constitutions of a home server. It is a figure which shows the example of the content of the mail for password change in embodiment of this invention. It is a figure which shows the example of the user interface screen for preparation of the mail for password change in embodiment of this invention. It is a figure which shows the example of the user interface screen following the screen of FIG. It is the flowchart which showed the procedure of the process and communication of a portable terminal, a reader / writer part, and a home server for the key information collation in embodiment of this invention. It is the flowchart showing the operation example of the some terminal and home server at the time of password change. It is a figure of the display screen which shows the example of a message which alert | reports that the password was changed in embodiment of this invention. It is the figure which showed the specific example of a change of the password for unlocking in the system shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 ... Control part, 10 ... Portable terminal, 10a-10d ... Portable terminal, 20 ... Non-contact IC card part, 22 ... Memory, 30 ... Door, 31 ... Lock mechanism, 32 ... Reader / writer part, 300 ... Home server, 400 … Email for password change

Claims (7)

A locking mechanism including an electronic lock attached to the locking object;
A portable terminal having a data communication function and a non-contact IC card portion and storing an unlocking password;
Wireless communication means installed on the side of the lock object and performing wireless data communication with the non-contact IC card unit;
It has a data communication function and stores an unlocking password, and compares the unlocking password with the password obtained from the portable terminal side by the wireless communication means, and opens the lock mechanism when both passwords match. An unlocking control means for locking,
The mobile terminal and the unlocking control means each have a function of updating a password currently stored in itself with an unlocking password given from the outside by the data communication function.   By updating the unlocking password, the unlocking password stored in the unlocking control means and the unlocking password of the specific mobile terminal are made inconsistent, thereby unlocking the specific mobile terminal. The lock system according to claim 1, wherein the lock system is disabled.   The lock system according to claim 1 or 2, wherein the unlocking password is transmitted and received by electronic mail.   3. The device according to claim 1, further comprising means for performing personal authentication between the contactless IC card unit of the portable terminal and the unlocking control means separately from the comparison of the unlocking password. Lock system. Data communication means for transmitting and receiving data via a communication network;
Storage means for storing at least the unlocking password;
Password updating means for updating the unlocking password stored in the storage means with the unlocking password obtained via the data communication means;
A non-contact IC card unit which has a non-contact IC card function for performing short-distance wireless communication by radio, and transmits an unlocking password stored in the storage means during short-distance wireless communication with an external reader / writer unit; ,
A portable terminal characterized by comprising: Data communication means for transmitting and receiving data via a communication network;
Storage means for storing at least the unlocking password;
Password updating means for updating the unlocking password stored in the storage means with the unlocking password obtained via the data communication means;
Control that outputs an unlocking instruction when both unlocking passwords match when the unlocking password is received from the outside by comparing the unlocking password with the unlocking password stored in the storage means Means,
A server comprising: A computer program executed in a portable terminal having a data communication function for transmitting and receiving data via a communication network and a contactless IC card function,
Monitoring the receipt of email;
Checking whether the email is an email instructing to change the unlocking password upon receipt of the email; and
Extracting the unlocking password from the received content of the e-mail instructing to change the unlocking password;
Updating the unlocking password stored in the memory with the extracted unlocking password;
Reading the unlocking password from the memory at the time of unlocking instruction by the non-contact IC card function and wirelessly outputting;
The computer program characterized by performing.

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