METHOD FOR PAYMENT USING CARD, DIGITAL SYSTEM, AND SETTLMENT SIDE SYSTEM THEREOF

摘要

Disclosed are a payment method using a card, a digital system for the same, and a settlement side system thereof. The payment method using the card comprises: a step that the digital system performs communication with the card for payment of payment demand; a step that the digital system receives card one-time information generated by the card from the card through the communication; and a step that the digital system transfers a checking signal including the received card one-time information to the settlement side system. If the card is authorized by the settlement side system based on the checking signal including the transferred card one-time information, the approval of the payment demand is decided by using payment financial information corresponding to the card preregistered in the settlement side system.