Computer Science for IGCSE & O level - Hardware (Section 12 - No. 14)

How does a capacitive touchscreen detect touch?

By sensing the change in electrical capacitance when a finger touches the screen.

By emitting infrared beams across the screen.

By measuring the pressure applied to the screen.

By using a laser to detect the touch point.

Capacitive screens use a conductive layer and measure the change in capacitance when touched.