| 摘要 |
A data exchange system that exchanges data with a host device comprising controller and a host housing comprises at least one button assembly and a button reader system. The at least one button assembly comprises an encoder for storing data, a button coil, and a switch. Closing the switch forms an antenna circuit. The button reader system comprises a decoder and at least one reader coil defining at least one button position on the host housing. When the at least one button assembly is arranged at the at least one button position, the controller of the host device causes the decoder to obtain data from the encoder through the button coil and the reader coil when the switch is closed.
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