Device and method for detection

Abstract

A detection device for detecting a human body portion includes a plastic element, a substrate, a plurality of metal pieces, a ground plane, a multiplexer, and an HBC (Human Body Communication) transceiver. The substrate has a first surface and a second surface which are opposite to each other. The metal pieces are disposed on the first surface of the substrate. The metal pieces are adjacent to each other. The ground plane is disposed on the second surface of the substrate. The plastic element covers the metal pieces. The metal pieces are configured to capacitively couple to a plurality of electric field signals through the plastic element. The multiplexer generates a selection signal according to the electric field signals. The HBC transceiver receives the selection signal.

Dependencies are inferred from the claim text.