SETTLEMENT PROCESSING METHOD, ITS SYSTEM, AND CLIENT TERMINAL DEVICE, SHOP TERMINAL DEVICE, AND FINANCIAL INSTITUTION TERMINAL DEVICE USED FOR IT

PROBLEM TO BE SOLVED: To provide a settlement processing method capable of easily processing settlement between one shop and a plurality of clients. SOLUTION: Electronic money, agreement information, and request information is transmitted from a client A to a client B, electronic money, agreement information, and request information about the clients A and B is transmitted from the client B to the shop, and at the shop, it is determined whether the agreement information of the client A corresponds to that of the client B. If correspondence is obtained, respective request information is transmitted to financial institutions A and B trading with the clients A and B. The financial institutions A and B verify validity of the electronic money of the client A and that of the client B and notify respective verification results mutually. If no fault is detected in both electronic money, settlement is processed on the basis of the request information. COPYRIGHT: (C)2004,JPO&NCIPI