For tracking in parts of the world outside mobile phone coverage, Trango can offer a wide variety of devices to track just about anything including people, vehicles, ships, yachts, aircraft and other valuable assets or products.  

All tracking units include a panic alarm monitored by Trango Operations 24/7/365.

Iridium based units are becoming smaller and some include additional 'built in' messaging features for emergency communications. Iridium satellite coverage includes the polar regions.