A method for authenticating a geo-fencing payment, including receiving based on a wireless protocol of the geo-fencing payment, a payment account number associated with a mobile device of a consumer, wherein the payment account number is sent automatically to a POS device without user intervention when the mobile device is within a pre-determined range of the POS device, receiving a security code and an identifier of a merchandise that are inputted into the POS device by the consumer, determining that the mobile device is within the pre-determined range when the security code and the identifier are received, submitting, to a computer server, a merchandise order comprising a payment amount, the payment account number, and the security code, and receiving an authorization from the computer server to release the merchandise to the consumer based on a consumer profile of the consumer stored in the computer server.