Well it’s not exactly two-way GPS tracking but you can send text messages and update your position via the soon to be released DeLorme Earthmate PN-60w with SPOT Satellite Communicator. The SPOT beacon has been around for a while. It is a personal emergency beacon that sends a message via satellite to give rescuers your location. In that is doesn’t rely on cell technology there is a better chance your message will get out regardless of where you are.
The new SPOT Satellite Communicator, designed exclusively for the new PN-60w, merges SPOT satellite message functionality and DeLorme state-of-the-art GPS mapping via wireless. Together, this product pairing offers broader messaging capabilities. Users can send freeform text messages using the PN-60w’s keyboard to select individuals or groups from the field even from remote areas world-wide.
So next time some geocachers go to Maple Mountain we’ll have to see if someone brings one of these along!