Patent ID: 11875337
Assignee: SSENSTONE INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A smart card for providing a financial transaction by using a virtual card number, the smart card comprising:
a display including at least one of a liquid crystal display,
a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and an electronic paper;
a printed circuit board (PCB);
an integrated circuit (IC) chip mounted on the PCB;
a processor,
wherein the processor is configured to:
generate a virtual card number by combining a plurality of detailed codes, wherein:
the plurality of detailed codes are selected according to a predetermined rule; and
the plurality of detailed codes comprises:
a first code indicating a start point for searching for a storage location of a real card number; and
a second code indicating a search path from the start point to the storage location of the real card number according to a specific search scheme;

generate the first code and the second code, respectively, by using a plurality of detailed code generation functions included in the virtual card number generation function, and automatically change the first code and the second code, respectively, as a predetermined time interval elapses; and
visually output the virtual card number by controlling the display to display the virtual card number, wherein the display comprises at least one organic light emitting diode (OLED) and further wherein the display is configured to automatically update the virtual card number displayed on the display in real time by modifying the at least one OLED in response to the change of the first code and the second code, respectively, as the predetermined time interval elapses; and

a non-transitory machine readable medium storing a virtual card number generation function and a rule of updating a virtual card number generation function.