http://www.engadget.com/2011/01/04/spot-connect-brings-gps-tracking-and-communication-to-your-bluet/

"This GPS puck is equipped with a Bluetooth transceiver, enabling it to "sync with smartphone operating systems like Android" when you're too deep in the brush to nab a cellular signal. From there, it'll allow your smartphone to determine location via the Globalstar satellite network, and even transmit that information to personal contacts or an international emergency response center. Users can send location-based texts or emails via satellite, update social networks from remote locations, track progress on Google Maps / My Tracks and store up to ten predefined messages for quick referencing and sending."