Using a GPS receiver is a fun way to add another layer of excitement to any journey or adventure. Should your GPS unit ever fall into the hands of an unscrupulous pick-pocket, however, you may have just given away the keys to the kingdom. When I set up my Garmin receiver, it allowed me to designate a 'home' point to navigate back to at the end of the trip. This seemed convenient, so I started adding waypoints all throughout my day. Than I realized that anyone who gained access to my device would know everywhere I was, when I was there, for how long, etc. It just did not seem prudent to have things placeholders for things like home, parents house, and secret buried treasure. This hypothetical person who just stole your GPS now knows where you and the rest of shiny gadgets live.
Is your GPS telling secrets about your life?
Don't forget about smartphones and tablets. This devices are often GPS enabled and if you carry one, it knows quite a bit about what you do, where you go, etc. Than again, some get a kick out of doing everything in public as we can tell from Foursquare, Gowalla, Facebook places, etc. Just be aware of what your device knows, and what it will tell if it's lost of stolen!