This is a plug-in for Locus mapping software. Plug-in enables to display location data on Locus map from GPS transmitters (http://en.wikipedia.org/wiki/GPS_tracking_unit).
Locus Free or Pro version 2.0.2 or later required for full functionality.
Phone service is required for operation.
Application sends SMS to gps transmitter to query gps location. Returning SMS from gps transmitter is parsed and the transmitter location is updated on Locus map.
Note: This app uses SMS messages.