There is no substitute for a locked garage at your home. My car's garage has only two windows that face my bedroom with a myq software driven garage opener. I can monitor the inside and door status from anywhere in the world given www. is available. I checked it twice while we were in BC. As far as outside, if they want it bad enough they'll take it. Had a friend at work with a very nice lifted truck (poured a bunch of money into it) While he was on a two day trip, a tow truck drove up and winched it on the flat bed. Neighbors thought a shop had come to get it to do work on it. Truck was found a few eeks later less wheels/tires and truck bed. Funny that none of the expensive suspension parts and bumpers were stolen.