| 摘要 |
A data center (60) having a contractor information management database (70) in which a mobile telephone number (71) and a credit card number (73) both assigned to each mobile (40) are correlated each other and registered is interposed between an authorization service network including a credit card company (10), goods/service shops (20), and a credit card member and a mobile communication network including a mobile communication company (30) and mobiles (40). The user (50) transmits card settlement information (80) to the data center (60) by operating the mobile (40) for communication, the credit card number (73) is read out of the contractor information management database (70) according to the mobile telephone number (71) of the mobile (40), the card settlement information (80) and the credit card number (73) are transmitted to the credit card company (10), and the settlement is conducted without using the credit card number (73).
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