To prevent card rereading when rechecking credit, in a credit card transaction system interlocking a POS terminal and a card terminal to process a transaction by a card exhibited by a user.
This credit card transaction system has the card terminal 1 and the POS terminal 2, encrypts card information read from the user's card by encryption algorithm particular to the card terminal, returns it to the POS terminal issuing a settlement request as transaction tag information, and sends a returned transaction tag of the credit card transaction to the card terminal from the POS terminal when the credit card transaction is newly required. A function preventing a plurality of times of card exhibition and reading can be accomplished while maintaining a security level.
COPYRIGHT: (C)2005,JPO&NCIPI
Kumamoto Kazuhiro
Kendo Tanaka
Motoharu Hirowatari
株式会社日本カードネットワーク
| JP8036606A | ||||
| JP1217695A | ||||
| JP2003141432A | ||||
| JP2003223598A |
Kenji Doi