This is something that I had to get my wife to understand. She, at first, couldn't understand why I didn't want to program the garage door opener in her car to actually open our garage. And, at first, she thought I was paranoid for putting "Home" as the Wal-Mart about a mile from our house. After a little discussion she now understands and completely backs my "tin foil hat"edness.Something that hasn't been said here and I personally think most people overlook is our various GPS and MAPs devices.
Most cars with GPS have a setting for HOME. And most people foolishly put their home address into it. Same cars usually have built in garage door openers.
While it is nice to be able to just hit "go home" and get a quick reference home, might be much more advisable to put an address nearby in that setting. I pick a place a few miles away. I know that once I get in the general area, I can find my way home, but when driving back from Dallas, Tulsa, San Antonio, it won't make any difference in the directions I get.
Same thing with our "smart" phones. NEVER put your real "HOME" in there. Maps or otherwise.
How many smart phones also have aps for garage door openers, alarms, etc on them.
Someone gets your phone, opens up the "home" location and has access to everything.
My "home" settings are never my actual home.