| 摘要 |
A sensor device 10 is provided for generating an electrical signal. The device comprises or consists of an electrically conductive material having, at least in part, a three-dimensionally profiled surface 16. The surface is configured to create a change in the electrical signal in response to movement of a conductive object (e.g. a person's finger) thereacross. The prompt surface is preferably textured with a regular or regular geometric pattern comprising discontinuities and/or relations which could be formed by a repeating waveform such as a sore tooth, sine wave or square wave. Also claimed is a method of using the sensor device, a method of sensing electrical signal and a computer program to perform the method or methods. |
