Your overhead garage door can be easily opened by inserting a wedge at the top center of the garage door, inserting a homemade wire device that snags the safety release on the traveler and in a few seconds your door can be quietly opened. You can prevent this with a simple plastic tie. Tie off the safety release. In the event of power failure you cut the plastic tie and your safety release is operable. Almost daily I notice cars and trucks slowing down to look in when my garage door is open, when they see me they drive off. If I am not right there my garage door is down.