1. A system for verifying presence at a vendor location, the method comprising: an identification tag coupled to a device, wherein the identification tag is operable to transmit a unique user identifier representing a user in possession of the device; an identification tag reader operable to receive from the identification tag the user identifier, wherein the identification tag reader is placed at a location of a vendor; a computing device, operable to receive the user identifier from the identification tag reader, and further operable to receive from the identification tag reader a vendor identifier representing the vendor location, and still further operable to receive a time identifier representing a time when the identification tag reader received the user identifier from the identification tag; and a database that stores the user identifier, the vendor identifier and the time identifiers with a plurality of other user identifiers, other vendor identifiers and other time identifiers, wherein the computing device determines the name of the user and the name of the vendor as a function of the user identifier and the vendor identifier.