Say you're out shopping for the holidays, and a thief locates your car as a potential mark. He might crack a window with a spark plug or jimmy the door open. Once he's inside, he'll be looking for that GPS -- along with personal papers, gadgets and a host of other easy steals that could mean big problems for you down the road -- and once he has that, he knows your home address. He also knows you aren't home, because he found your car while you were out shopping.
To deter thieves from choosing your car as a mark in the first place, experts suggest keeping all valuable items in the trunk and using a different form of mount for your GPS if you don't want the hassle of wiping away the marks whenever you remove it. Just remember to hide whatever mount you do use along with the GPS. Car alarms are helpful, but they're so ubiquitous that they don't always do the trick: People often ignore them until it's too late.
If you have a purse or bag with you, you may want to consider taking the GPS along on your shopping trip. It's important to remember to erase signs of your gadgetry so that the break-in never occurs in the first place. But even just one little mistake could lead to an even bigger robbery, back on your home turf.
The best way to guard against this kind of violation, of course, is to keep your car from being a target in the first place. Flashy rims, entertainment systems, gadgets and loose CDs are all flashing signs for a robber. But by making sure the interior of your car offers no sign of easy-to-steal items, you can prevent the damage, stress and time lost to robbery.