METHOD FOR SUPPORTING CARD PAYMENT OF MULTIFUNCTIONAL CARD-TYPE DEVICE, AND MULTIFUNCTIONAL CARD-TYPE DEVICE PERFORMING SAME

摘要

According to an embodiment of the present invention, a method by which a multifunctional card-type device supports card payment is provided, the method comprising the steps of: (a) if a first user input is detected, displaying first card identification information that is any one of a plurality of pieces of card identification information that is pre-stored in a memory; (b) if a second user input is not detected during a pre-determined fixed payment waiting time after the first user input is completed, (i) increasing the number of cumulative payment data generation that is recorded in a secure element, and checking whether a newly calculated number of cumulative payment data generation exceeds a pre-determined number, or (ii) checking whether the number of cumulative payment data generation that is recorded in the secure element corresponds to the pre-determined number; and (c) generating payment data so as to be able to perform card payment on the basis of first card track information that is stored in the secure element and that is equivalent to the first card identification information, if it is confirmed from the checks that the newly calculated number of cumulative payment data generation does not exceed the pre-determined number, or that the number of cumulative payment data generation that is recorded in the secure element does not correspond to the pre-determined number.