SMS
Establishing waypoints in real-time and transmitting them via GSM cellular telephone networks using the Short Message Service (SMS) is referred to as Gps2sms. Some vehicles and vessels are equipped with hardware that is able to automatically send an SMS text message when a particular event happens, such as theft or anchor drift. The receiving party can ring an alert sound or store the waypoint in a computer system or draw a map indicating the location. Recreational use of GPS2SMS is used by travellers who want to show their digital breadcrumbs on a map. See also automatic identification system.
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