Abstract: The present invention relates to providing a financial transaction and, more particularly, to a system and method for proceeding with a financial transaction in a financial terminal such as an automated teller machine (ATM) using an approval number resulting from pre-approval. The present invention is directed to providing a system and method for proceeding with a financial transaction, such as a cash withdrawal or a purchase of a gift certificate, by obtaining transaction approval in advance with a portable terminal through communication with a financial institution server or the like and then transferring only a result of the transaction approval to an ATM or the like.

Abstract: The present invention relates to a system and method for providing a payment service of a two-channel authentication method utilizing a card reader infrastructure and a portable user terminal. The system for providing a payment service according to an aspect of the present invention includes an affiliate POS terminal configured to receive MIN card information and generate and transmit a transaction approval request signal, and a server configured to receive the transaction approval request signal, transmit a transaction authentication request signal to a portable user terminal, and transmit approval request information to a financial institution server when transaction authentication is completed from an input signal of the portable user terminal.

Abstract: The present invention relates to a bill splitting system. The bill splitting system, according to one aspect of the present invention, comprises a user terminal for requesting bill splitting; and a payment server for receiving payment request information from at least one user terminal according to a bill splitting request for a total payment amount corresponding to inputted order information, and authenticating the payment.

Abstract: The present invention relates to providing a financial transaction and, more particularly, to a system and method for proceeding with a financial transaction in a financial terminal such as an automated teller machine (ATM) using an approval number resulting from pre-approval. The present invention is directed to providing a system and method for proceeding with a financial transaction, such as a cash withdrawal or a purchase of a gift certificate, by obtaining transaction approval in advance with a portable terminal through communication with a financial institution server or the like and then transferring only a result of the transaction approval to an ATM or the like.

Abstract: The present invention relates to a system and method for providing a payment service of a two-channel authentication method utilizing a card reader infrastructure and a portable user terminal. The system for providing a payment service according to an aspect of the present invention includes an affiliate POS terminal configured to receive MIN card information and generate and transmit a transaction approval request signal, and a server configured to receive the transaction approval request signal, transmit a transaction authentication request signal to a portable user terminal, and transmit approval request information to a financial institution server when transaction authentication is completed from an input signal of the portable user terminal.