| 摘要 |
PURPOSE: A method for an electronic payment using a credit card having a sub account is provided to solve an uneasiness caused by using a credit card by making a plurality of credit accounts being dependently linked existing credit card number and accounts and deciding a use condition of each credit accounts. CONSTITUTION: A card possessor receives a credit card(S1) and performs a log-in process. The card possessor creates a plurality of one's credit accounts being dependently linked the number of the credit cards separately possessing the credit(S2). If the card possessor selects a desired commodity by moving an electronic commercial transaction space of a seller through the one's credit accounts(S4), the seller performs a certification process(S5). If the certification process is completed, the card company pays the cost of the commodity to the seller and charges the cost to the card possessor after a predetermined period(S6).
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