| 摘要 |
PURPOSE: To provide a method for executing a cashless transaction by means of preventing the content from being noticed by the other person concerned of the transaction. CONSTITUTION: In the transaction by a credit card as the cashless transaction, information and funds can be transferred by using a communication exchange 227 by preventing information and the source of funds from being noticed by the destination (bank) 203 of funds transfer. The respective persons concerned (a customer 231, a different name customer 234, banks 203 and 213, a different name customer P234, a store 245 and a store transaction bank 237) on the transaction and the communication exchange 227 can read only information required for the roles in the transaction by using a common key ciphering method. A method for permitting the bank 213 to receive individual information from the card holder, to give more than one question to the card holder by using information and to verify the identification of the card holder by using the response is shown as the identification verification method of the card holder (customer 231). |
