A method is disclosed. The method includes establishing, by a first device, a wireless connection to a second device; transmitting a request, by the first device and to the second device, for location data indicative of a location of the second device; receiving, by the first device and from the second device, the location data indicative of the location of the second device; determining, by the first device, a distance between the first device and the second device based at least in part on the received location data; generating, by the first device, an altered value based on the received location data and the determined distance; and transmitting, by the first device and to the second device, the altered value and an account identifier associated with a user of the first device.