1. An apparatus comprising: a processing device comprising a plurality of capacitance sensors and a plurality of pins; and a switch circuit coupled to the processing device and to a plurality of capacitive sense elements coupled to the plurality of pins, wherein the processing device is to select a first capacitance sensor of the plurality of capacitance sensors to couple to a first group of two or more of the plurality of capacitive sense elements via the switch circuit in a first mode and to couple the first capacitance sensor to an individual one of the two or more of the plurality of capacitive sense elements in a second mode.