Fingers insulated by a glove may also be problematic, and capacitive touchpads was rarely used for medical hardware input. Capacitance-based touchpads will not sense the tip of a pencil or other similar ungrounded or non-conducting implements. The most common technology used in the 2010s senses the change of capacitance where a finger touches the pad. Touchpads operate in one of several ways, including capacitive sensing or resistive touchscreen.