The United States Department of Defense's Global Positioning System or GPS is a well known global navigation satellite system. Others include Russian GLONASS, Chinese BeiDou, and European GALILEO. By using three of these systems, BuddyTracker gets much better accuracy and coverage.
Using GPS to avoid getting lost is nothing new. But having to dig around in your pack every ten minutes to figure out where you are is a waste of time and can spoil an otherwise perfect day. Using a HUD brings the data you need - and just the data you need - to your fingertips.
By not relying on cellular service, BuddyTrackers establish their own mesh network. Exact range specifications have not yet been set as range translates directly to cost. By using a mesh network topology, each BuddyTracker acts as a range booster for every other BuddyTracker.