A motion sensing combination lock having a plurality of sensors disposed upon a lock body, each of said plurality of sensors disposed sensible of obstructions imposed most proximal thereto, whereby a touch-free combination code is enterable by position of a user's hand between at least two of the plurality of sensors in a specific sequence to effect touch-free operation of a lock.
Motion sensing combination lock
2016-06-07
Patent
Electronic Resource
English
Tema Archive | 1974
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