The case is called a reverse geocache and it can only open when it's in a certain spot in the world. It was made with a metal box, IKEA door handles, nixietubes to display distance, a GPS sensor and an Arduino.
Garmin's $23 pet rock "Chirp" can last up to a year in the wilderness as it records the number of people who stumble across its coordinates. It's for the more adventurous types, who love nothing more than geo-based activities.
Congratulations are in order for the Boy Scouts, who have figured out a cool way to combine the old with the new using a "geocaching badge" for Scouts.
Nicknamed the "Easy-Bake Oven of handheld GPS devices," the Geomate.jr is a family-friendly device designed to get children out of the house, away from their video games and go geocaching outdoors.