Looks like a useful product - list price is $100.
Amazon.com: IDC Ecco Intelligent Digital Compass Personal Pocket GPS Locator: Electronics
- Find your way back! Small and easy to use patented GPS system that is great for finding your way back in any situation. Ecco conveniently fits on your keychain. Find your car in parking lots at sporting events, shopping malls, the airport or use for travel or your next outdoor adventure. Simple and compact, just lock, go and return. Displays arrow direction and distance. Stores up to three locations (Car, Home, Hotel, Campsite, etc). Never get lost again!
IDC Ecco Intelligent Digital Compass Personal Pocket GPS Locator $69.99 at amazon 
