A device can include a memory storing user payment data and another memory device storing instructions that cause the device to establish a communication between a separate device and the system based on a gesture associated with the system and via a wireless link between the system and the separate device, the communication being associated with a potential purchase, present, on the display, an instruction associated with the potential purchase, receive a single-interaction from the user of the system to confirm a payment for the potential purchase, the single-interaction including a security measure to prevent unauthorized purchases, retrieve, based on the single-interaction from the user, the user payment data from the memory and transmit the user payment data via the wireless link to the separate device to make a purchase.