US Patent 10968660 Electronic door lock

An electronic door lock includes a controller, a first touch sensor, and a lock operator. The first touch sensor detects touch on an exterior an exterior side of a door. The lock operator is selectively operated by the controller to unlock a deadbolt according to the touch detected by the first touch sensor. The electronic door lock is located on an interior side of the door. The first touch sensor may be electrically coupleable to a deadbolt lock for the deadbolt to act as an electrode of the touch sensor. The first touch sensor may detect the touch capacitively.