| 摘要 |
PROBLEM TO BE SOLVED: To provide a system for the settlement of accounts with not any cipher but a credit card by preliminarily deciding the ID of an individual member which can be used only on an internet between a card company and a card member, and using it for the settlement of accounts. SOLUTION: A card company 2 distributes an ID 1 exclusive to an internet to an individual card member 3, and allows the card member 3 to register an electronic mail address 5 for confirmation. At the time of card settlement, the card member 3 communicates the ID 1 exclusive to the internet and the electronic mail address 5 to an affiliated shop 4 of the card. The affiliated shop 4 informs the card company 2 of the above mentioned ID 1 and the electronic mail address 5, and requests approval, and transaction is established when the approval is obtained. |
