How does capacitive sensing work?

Capacitive sensing works by detecting changes in capacitance caused by the proximity or touch of a conductive object, such as a finger. It typically involves a sensor made up of two conductive plates that form a capacitor. When a finger approaches or touches the sensor, it alters the electric field and the capacitance between the plates, which is then measured by the sensor's electronics. This change can be processed to determine the presence, location, or movement of the object.