| 摘要 |
PROBLEM TO BE SOLVED: To provide the constitution method for a card system utilizing a portable telephone and the card system for which a registration ID under a contract with a communication connection trader is displayed as a two-dimensional display image by utilizing the portable telephone and the display image is read and turned to the authentication data of a customer terminal. SOLUTION: This card system is constituted of the portable telephone 1 provided with a packet communication means 17, an input means 11, a display part 12, a reception data storage means 15, a display data generation means 16, a registration ID memory 14 and a portable I/F means 13, an MIF unit 2 provided with a display read means 21, a decoding means 22, a portable I/F means 24, an authentication means 23, an I/F means 28 and a transmission/ reception data control means 25 and the customer terminal 3 for which the MIF unit 2 is attached or incorporated for performing the reception processing, transaction processing and account settlement processing of a customer and the lease processing and reservation processing of articles and services. |
