| 摘要 |
PROBLEM TO BE SOLVED: To quickly decide effectiveness and to reduce a transaction time by preliminarily extracting medium effectiveness information and terminal effectiveness information to a center computer side. SOLUTION: When an IC card 1 is inserted into a terminal device 3, the IDs of the card 1 and the device 3 are sent to a center computer 4. The computer 4 preliminarily stores effectiveness information retrieved from a center database 6 in an effectiveness information storing part 8. The effectiveness of the IC card and the terminal device is judged by the computer 4 and when both of them are effective, transaction is started. |
