| 摘要 |
PURPOSE: A system and method for paying for credit card fees using a debit card are provided to approve a debit card by linking remain of an account and credit line of the credit card, and pay with the credit card when the remain is not sufficient. CONSTITUTION: The user receives the issued credit card(210). When using the credit card at a credit card store, the user takes the use approval procedures through a credit card terminal of the store(220). A credit card company grants the use approval to the user only within the credit line of the credit card(230). In the first, the credit card store demands the payment in the debit card to a relevant bank, and only in case that the balance is short, the user pays the rest in the credit card(240-254).
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