E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
E05F 15/20 (2006.01) G07C 9/00 (2006.01) G08B 13/00 (2006.01)
Patent
CA 2726796
A method and system provides conditional allowance of access by operating a movable barrier such that access is not granted unless another condition is met. In one illustrative approach, a fist signal is received and, if a second signal is received within a set time frame relative to receipt of the second signal, a movable barrier operator is then activated. By one approach, one of the signals is a long-range transmission, and the other signal is a visual-range transmission.
Karasek Mark L.
Macrae & Co.
The Chamberlain Group Inc.
LandOfFree
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