Disclosed herein is a device and method to reduce the number of sensing pins in a controller. The device includes a linear sensor, a plurality of traces, and a controller. The linear sensor detects a position of a finger and transmits signals to the controller. The controller includes sensing pins, which are connected to the linear sensor by the plurality of traces. Each of the traces shares the sensing pins with several other traces, thereby reducing the required number of pins. Further, the traces and pins are mapped carefully in order to avoid duplication of two neighbors.
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Alou, Maurice, "Device And Method To Reduce Number Of Sensing Pins Of A Linear Capacitive Sensor", Technical Disclosure Commons, (October 24, 2017)