The capacitive touch surface, or touchpad, is a two-dimensional sensor formed by arranging the electrodes in rows and columns to form a matrix. The touchpad tracks finger position in both X and Y dimensions and supports single finger and multi-finger touch operations.
For optimum touch performance, the sensor design needs to be created specifically for the application and requirements. For more details on surface sensor design guidelines, refer to the AN2934-Capacitive Touch Sensor Design Guide.