Abstract: A card settlement method using a mobile information terminal provided with an IC card read/write function and a wireless communication function for the settlement of a transaction in a business establishment, comprising a step of having a customer using a business establishment wirelessly connect to an authorization server through a network by the mobile information terminal, a step of having the customer load his or her IC card in the mobile information terminal, read the information stored in this IC card, and send it to the authorization server, a step of having the authorization server decide on the authorization of the current transaction from authentication information stored in the IC card and proving the legitimacy of the card, settlement information containing at least a card number, and personal identification information input from the customer and proving the legitimacy of the customer, a step of sending a temporary password issued from a settlement server to the mobile information terminal for di

Abstract: An entering/leaving management system includes a mobile terminal and a managing server. The mobile terminal and a room IC card are carried to a room when using the room, and a start key of the mobile terminal is depressed, so that an IC card reading unit reads room identifier information from the room IC card. The mobile terminal adds time information acquired by a time management unit and the room identifier information to user identifier information read from a user IC card, so that the resulting information is stored into an information storage unit as entering/leaving managing information. After reading of all user IC cards is completed, the mobile terminal transmits the entering/leaving managing information to the managing server by using an information transmitting unit, so that the entering/leaving managing information is stored in the managing server.

Abstract: An entering/leaving management system includes a mobile terminal and a managing server. The mobile terminal and a room IC card are carried to a room when using the room, and a start key of the mobile terminal is depressed, so that an IC card reading unit reads room identifier information from the room IC card. The mobile terminal adds time information acquired by a time management unit and the room identifier information to user identifier information read from a user IC card, so that the resulting information is stored into an information storage unit as entering/leaving managing information. After reading of all user IC cards is completed, the mobile terminal transmits the entering/leaving managing information to the managing server by using an information transmitting unit, so that the entering/leaving managing information is stored in the managing server.

Abstract: In an electronic money system, based on an electronic money remittance order from a remitter's user terminal, an electronic mail including a predetermined remittance deposit program attached thereto is transmitted to a remittee's user terminal. At this time, an electronic money amount equivalent to the remittance is subtracted from the balance stored in an IC card, which is owned by the remitter and connected to the remitter's user terminal. The electronic money remitted to the remittee is deposited and stored into the IC card owned by the remittee through the execution of the remittance deposit program having been received in the terminal which is connected to the IC card owned by the remittee.

Abstract: The IC card includes a non-contact type I/F section 32 for performing transmission/reception of data with an electronic ticket system 80 via a radio link R2 for IC card and a contact-type I/F section operating independently of the non-contact type I/F section 32, for performing transmission/reception of data via a physical contact is mounted. The portable telephone set includes a contact type IC card reader/writer 23 for performing read/write control of data with respect to the IC card 30 via the contact and the contact-type I/F section.

Abstract: A card settlement method using a mobile information terminal provided with an IC card read/write function and a wireless communication function for the settlement of a transaction in a business establishment, comprising a step of having a customer using a business establishment wirelessly connect to an authorization server through a network by the mobile information terminal, a step of having the customer load his or her IC card in the mobile information terminal, read the information stored in this IC card, and send it to the authorization server, a step of having the authorization server decide on the authorization of the current transaction from authentication information stored in the IC card and proving the legitimacy of the card, settlement information containing at least a card number, and personal identification information input from the customer and proving the legitimacy of the customer, a step of sending a temporary password issued from a settlement server to the mobile information terminal for di