... SOS messages show on screen fleet management gps tracking software from T-Zone DigitalDescription: TZTRACE Tracking System is ... of Trackers, GPRS and internet network, PC Server, Tracking software website, and database. Flow: Tracker get GPS signal from ... Administator can control all users&tracking objects and activate account;9. Software installation: Windows2003(x86), ASP.net2.0, MSSQL2000/2005. ...