1. GPS satellites provide signals
2. SPOT Messenger’s onboard GPS chip determines your GPS location and sends your location and pre-selected message to communication satellites
3. Communication satellites relay your message to specific satellite antennas around the world
4. Satellite antennas and a global network route your location and message to the appropriate network
5. Your location and message are delivered according to your instructions via email, text message or emergency notification to the GEOS Rescue Coordination Center