Traccar Client Protocol

This protocol is used only by old versions of Traccar Client. New versions use the OsmAnd protocol.

The protocol uses TCP as a transport layer. Messages are separated by carriage return and line feed characters (\r\n).

Login (sent once a TCP connection is establshed):

$PGID,123456789012345*0F\r\n (where 123456789012345 - IMEI or other unique id)

Simple location report format is just a standard NMEA GPRMC sentence:


Extended location report format: