Drive-By Car Thieves
Does your car have an electronic key? My 2005 minivan doesn't, but my wife's 2014 minivan does.
The electronic keys are easily stolen. I don't mean physically stolen. They can be stolen by thieves driving by your house. They can pick up the key's weak digital signal. So, put the key in a coffee can. The story is here:
Or wrap the key in aluminum foil.
I can almost hear the thief. "Curses! Foiled again!"