How often have you been to an unfamiliar place only to have your bearings all turned around?
Maybe you travel overseas, stay in hotels but forget which corner your hotel is on.
Here is a novel product that can assist you with not having to remember all the gory details. Simply activate the GPS, lock in your current position, go on your way and use it's locator function to return you to home.
Certainly a novel idea.
My primary concern with an item of this kind is that potentially you give a potential thief, your exact location of your property. They will have your key and your property location. Is that smart?