Dual device point of sale system using short-range wireless connection

One or more non-transitory computer-readable media comprising computer-readable instructions stored thereon that when executed by one or more processors cause the one or more processors to:

• provide a payment interface device configured to receive payment information and having a first touch screen display;
• instantiate a first payment flow display service by the payment interface device;
• store a set of interface screens on the payment interface device, wherein the set of interface screens are accessible to the first payment flow display service;
• provide a display device having a second touch screen display;
• instantiate a second payment flow display service by the display device;
• form a secure wireless connection using a first short-range wireless protocol module on the payment interface device and a second short-range wireless protocol module on the display device;
• and
• exchange messages over the secure wireless connection to execute a payment flow using the first payment flow display service and the second payment flow display service;
• wherein the payment flow comprises at least:
• (i) a display of information on the first touch screen display, using both the first payment flow display service and the second payment flow display service, based on information received on the display device;
• and (ii) an encryption of the payment information received by the payment interface device;
• and
• wherein the information is displayed on the first touch screen display using at least one interface screen from the set of interface screens, the at least one screen being provided by the first payment flow display service based on one or more messages from the exchange of messages.