CHARGING METHOD AND SYSTEM, PURCHASE CONTROL TERMINAL, AUTHENTICATION CHARGING SERVER, SALES SERVER, CHARGING PROGRAM AND STORAGE MEDIUM STORING CHARGING PROGRAM

摘要

PROBLEM TO BE SOLVED: To enable instantaneous settlement at the time of purchasing contents on a network or the like, capable of settlement by prepayment and post- payment, etc., for which a medium is inexpensive.;SOLUTION: A bill signature key is decided between an authentication charging server and a purchase control terminal to which an authentication medium owned by a purchaser is connected. For each transaction prepared with the bill signature key, communication of the purchase control terminal to which the authentication medium is connected and a sales server is performed by bill information prepared in the purchase control terminal.;COPYRIGHT: (C)2003,JPO