Fingerprint Capacitance


Walsun fingerprint padlock is best with fingerprint capacitance.Capacitance sensors use principles associated with capacitance in order to form fingerprint images. In this method of imaging, the sensor array pixels each act as one plate of a parallel-plate capacitor, the dermal layer (which is electrically conductive) acts as the other plate, and the non-conductive epidermal layer acts as a dielectric.


Apple's Touch ID uses a capacitance fingerprint sensor.