| 摘要 |
PROBLEM TO BE SOLVED: To enable a product purchase by a card settlement without requiring presentation of a credit card.SOLUTION: A user downloads software 1S from a server 1 using a smartphone 30, and transmits customer information and card information such as a card number and the like to the server 1. The server 1 is configured to: transmit the customer information and the card information to a PC 20 of a credit card company; request the PC 20 to authenticate whether or not a registration is acceptable as a customer; delete the card information when the authentication is obtained; store the customer information in a DB 2; and determine the user as a registered customer. Upon participation, each shop downloads the software 1S. The customer information is configured to be transmitted to a shop PC 40 from the smartphone 30 of the registered customer, and the PC 40 is configured to ask the server 1 to verify the customer information, and the server 1 is configured to request the PC 20 to authorize a card settlement, and when the card settlement is authorized by the PC 20, ask the registered customer to agree to the card settlement; and in response to reception of a reply of the card settlement agreement, transmit a message of a settlement completion to the PC 40 and PC 20. |
