Abstract: A smart multi-card capable of simultaneously using a plurality of card output schemes, and a payment method using the same. More specifically, a smart multi-card device capable of simultaneously using a plurality of card output schemes, according to one embodiment, includes a storage unit which stores one or more types of card information having individual card output schemes inputted by a user; and a plurality of sensors, wherein each of the plurality of sensors includes: a sensor unit which matches at least one type of card information of the one or more types of card information inputted by the user; and a control unit which performs control so that when the user touches a specific sensor of one or more sensors, card information matching the specific sensor is loaded, and a payment or accumulation is performed according to the card output scheme of the loaded card information.

Abstract: A smart multi-card may include: a frame; a wireless communication unit configured to transmit or receive data to or from a card terminal or a communication device through wireless communication; an information storage unit configured to store card information relating to a plurality of cards; a user input unit configured to receive a user input from a user to select card information corresponding to one of the plurality of cards; a display unit configured to visually display the selected card information; and a processor configured to extract the card information selected by the user from the information storage unit, process the card information, deliver the processed card information to the display unit, and process the data transmitted or received through the wireless communication unit.

Abstract: A multi-smartcard may include: a support; a touchscreen disposed on the support configured to receive an input operation from a user including a first input operation and a second input operation; and a processor configured to generate a first user interface (UI) of card information corresponding to the input operation applied to the touchscreen and instruct the touch screen to display the first UI, and to receive the first and second input operations, wherein the processor is configured to change the card category in response to receiving the first input operation and change the card type in response to receiving the second input operation.

Abstract: A mobile payment method using a smart multi card and a smart multi card application, enabling the automatic recommendation of a card to be used when making a mobile payment. The mobile payment method using a smart multi card, includes storing card information of a smart multi card; collecting order information on an ordered product through a user terminal; choosing a recommended card that is adequate considering the order information among a plurality of cards included in the smart multi card; and transmitting the card information of the recommended card to the smart multi card.

Abstract: A smart card may include: a support; and a magnetic field generator arranged on the support and including at least one track configured to generate a magnetic signal corresponding to a card information stored on the smart card by forming a magnetic field, wherein the at least one track may include a single magnetic cell in which both magnetic poles thereof are formed when an electric current flows therethrough, wherein the magnetic cell may include: a first layer having a first circuit pattern and a first via hole; a second layer having a second circuit pattern and a second via hole; and a core material provided between the first layer and the second layer, and wherein the first and second via holes are matched so that the electric current rotationally flows through the circuit patterns and the via holes in a predetermined direction with respect to the core material.

Abstract: A smart multi card, and a method for issuing card data for a smart multi card. The smart multi card includes a first storage unit storing one or more pieces of first encryption data and seed data. The first encryption data generated by performing a first encryption of specific card information or alternative information corresponding to the card information. A second storage unit for storing card related data including storage location data of the specific first encryption data and seed data in the first storage unit. A user input unit for receiving a user's operation. A first control unit for generating token data by performing a second encryption of the first encryption data corresponding to the selected card using the seed data. A second control unit for making a request to the first control unit for the token data. A card data output unit for externally outputting the token data.