Patent ID: 7236751

Claim:
An input/output device comprising: a pendant strap; and a connecting member connecting the strap in a ring shape, wherein the strap incorporates at least one input portion; and the connecting member comprises a connector for the input portion and a cellular phone or a portable information device; the strap further includes first and second case-type connecting members at one end and another end and a wiring member connected to the connector therein; the first case-type connecting member comprises an input/output circuit connecting the input portion and the connector together therein; the second case-type connecting member comprises a terminal connected to the wiring member and capable of input and output for the cellular phone or the portable information device; wherein indirect operation can be performed by an operating member that covers a pad of the strap body, wherein the at least one input portion includes at least one elongated sheet substrate mounted in the strap body, the at least one sheet substrate comprising electrode layers connected to the input/output circuit and resistive layers provided on the electrode layers and being separated from each other by a predetermined distance.