Specifications include, but are not limited to: The Guardian Mobility G4 provides global, real-time user tracking and two-way messaging using the iridium and GPS satellite systems in an all-in-one device. The G4 offers a migration path from basic tracking and communication to more advanced capabilities without the need to purchase a new device. The G4 is an Automated Flight Following AFF compliant solution that can be fixed mount or moved between aircraft. The G4 can operate standalone (AFF) and/or operate with the Guardian Mobility GMI Connect App running on the user’s smartphone or tablet (e.g. iPad, iPhone and Android (future release)). The GMI Connect App communicates via the user’s smartphone or tablet Bluetooth radio with the G4. Alert reports can also be sent by pressing the dedicated button on the G4 or via the GMI Connect App. G4 control functions (e.g. reporting rate) are enabled using the GMI Connect App.