Abstract: In a method for processing a data transfer, an electronic device accesses card-specific data and a card account number from a data-storing card. The electronic device generates a device-generated authentication number which is associated with the data transfer, and which is transmitted, together with the card account number and the card-specific data, to a network platform. The network platform compares an inputted authentication number from a portable device and the device-generated authentication number, and transmits to-be-transferred data to the portable device when the authentication numbers correspond with each other.