Gateway for contactless purchase transactions identifies plural transaction cards held by a customer at a point of sale terminal and loads account information into a memory. The customer's payment options are presented and a selection is received through a user interface. Account information associated with the selected card is forwarded to the point of sale terminal for use in the purchase transaction. The memory is cleared of the account data in advance of a next purchase transaction. Optionally, payment options can be displayed concurrently for selection, and one or more of the payment options can be highlighted to encourage its selection, and other messages, offers, and incentives can be displayed to the customer.