Bob, Great on the door launchers and you seem to be thinking of everything, so I assume you will have designed a safety feature of NOT being able to activate the mechanism, accidentally while driving down the highway at 88 MPH!! I have a pocketfull of remotes for various purposes and there is one in particular that gives me fits. One remote hits the other in my pocket and my garage door sometimes closes when I shove all those remotes in my pocket at once. So far I have been careful to wait a second before backing out. I have remotes for starting two cars, plus door lock/unlocks, lights, alarm systems etc, garage door openers plus ditto for the house bolt locks. Its ironic that my grandson is always having me "show off" my key chain, which has NO keys on it any more! Murray