Patent ID: 7567780

Claim:
A data exchange system for exchanging data with a host device comprising controller and a host housing, comprising: at least one button assembly comprising an encoder for storing data, a button coil, and a switch, where closing the switch forms an antenna circuit; and a button reader system comprising at least one reader coil defining at least one button position on the host housing and a decoder; whereby when the at least one button assembly is arranged at the at least one button position, the host housing engages the at least one button assembly to detachably attach the at least button assembly to the host housing such that the button coil of each button assembly detachably attached to the host housing is adjacent to one reader coil; when the at least one button assembly is attached to the host housing, closing the switch of the at least one button assembly forms an antenna circuit that allows the controller of the host device to cause the decoder to obtain data from the encoder through the button coil and the reader coil; and causes the controller of the host device to operate the host device based on the data associated with the encoder.