Abstract: The present invention incorporates scanning technology and secure payment technology into the operating system (OS) of a mobile device such as a smartphone. In a preferred embodiment, the scanning technology comprises RFID interrogation capability. This enables smartphone users to validate transactions during a shopping session at a retail location (i.e., scan items as they are added to their shopping cart) and streamline the payment process by electronically transmitting their credit/debit card information directly to their financial institution to authorize payment to finish the transaction, all while within the retail location.