Abstract: Methods and systems are disclosed that provide enhanced flexibility to merchants in the configuration of POS systems. One disclosed system includes a payment interface device having a first display, a means for receiving payment information, and a first payment flow display service (PFDS). The system also includes a display device having a second display and a second PFDS. The system also includes a secure wireless connection formed by a first short-range wireless protocol (SRWP) module on the payment interface device and a second SRWP module on the display device. The first and second PFDSs conduct an exchange of messages over the secure wireless connection to execute a payment flow.