How does anti theft GPS tracker works?

anti theft GPS tracker: The user sends a car search instruction SMS to the SIM card in the GPS terminal, and the GPS terminal returns the location.

Real Time Motorcycle GPS Tracking Device Tracker for Anti-Theft Via GPS Tracking System - China 2g GPS Tracker, GPS Vehicle Tracker

GPS anti-theft tracker solves the risk of stolen electric car

Car Gps Tracking Device Locator Real Time Anti-theft Alerts Location Terminal Support App/sms/platform Tracking Over-speed/geo-fence/vibration Alarm H

This GPS tracker protects your e-bike against theft better than any other!

Car GPS Tracking Device Locator Real Time Anti-Theft Alerts Location Terminal Support APP/SMS/Platform Tracking Over-Speed/Geo-Fence/Vibration Alarm History Track Playback for Car Vehicle Motorcycle E-Bike

Monimoto 7 Anti-Theft GPS Tracker, Gear Review

Anti-theft & GPS tracker for bicycle, moped and much more

Real-time GPS Tracker Tracking Locator Device GPRS GSM Car/Motorcycle Anti Theft

Architectural view of Vehicle Tracking and Anti-Theft System [15].

CarX GPS Tracker with SIM and Remote Engine On/Off

Anti-Jammer Device will protect car security against jammer device signal interference – Vehicle GPS Tracker Factory

Spytec GPS Anti-Theft Tracker, 5 Second Updates & Alerts Ignition On/Off, Vehicle Movements, Personal & Work Car Monitoring