In simple words
An OBD GPS tracker plugs into the diagnostic port of a car. It gets power from the port and reports location without any wiring.
Step by step
Find the OBD port under the dashboard
Plug the tracker in
It starts and finds satellites
It sends data through its SIM
You see the car in the app
Limits to know
An OBD tracker can be removed in seconds. If theft protection matters most, choose a hidden wired tracker.
Questions we hear often
Can anyone unplug it?
Yes, it is easy to remove. Wired GPS is harder to remove.
Does it drain the battery?
Most use very little power. Check your model for sleep mode.
Does every car have the port?
Most modern cars do. Check before you order.