GPS devices can be used to send out all sorts of information, including your location, speed, altitude and driving history. While all of this technology can be great, it may also be a nuisance if you want to maintain your privacy. So if you think that your parents, your boss or someone else may have bugged your car, you should know how to detect a GPS tracker in a vehicle.
Difficulty:ModerateInstructions
Things You'll Need
AM/FM radio
GPS bug detector
1
Pay attention when making cell phone calls or when listening to the car radio. Some of the cheaper models of GPS devices broadcast on the same frequencies as cell phones and radios. Make a few phone calls and turn on the radio on at separate times and see if you are regularly getting interference, such as high-pitched squealing.
2
Use an AM/FM radio. Get a portable radio and move it around the area that you suspect is bugged. If you begin getting interference, such as a high-pitch squeal, then you might have a transmitting device in that area. This isn't foolproof--transmitters can broadcast on a much higher frequency than radios and thus may not be detected.
3
Do a visual search. The cheapest way to find a bug is with your eyes. Begin by searching under seats and inside the glove box. Also check the undercarriage and the the insides of the front and rear bumpers as the device can be attached to the car using a magnetic casing. Finally, check the trunk, the engine compartment and--if you can pry it open--the dashboard. What you are looking for is likely to be a small, rectangular box. Some GPS trackers can fit in the palm of your hand, while others are about the size of a paperback book.
4
Get a countersurveillance bug detector. Purchase one of these devices at any spy and gadget store or online auction website. They usually cost between $300 to $500 as of January 2010 depending on which model you purchase. A couple of models that you might consider are the Spy Matrix Pro and the Spy Hawk Pro, but there are many available to fit your needs and budget.
5
Do a bug sweep. Turn on the device and move it throughout the interior and exterior of your vehicle. It will begin scanning the different frequencies that a GPS uses to transmit. It should pick up any signals within 5 to 10 meters. It will signal you by beeping, flashing a red light or vibrating. The closer you get to the bug, the more intensely it will do these things.
6
Repeat Step 5 several times. Make three or four passes over the vehicle at different times--the reason being that not all GPS transmit constantly. Some semipassive systems only transmit at regular intervals every 30 minutes or so. Since the bug detector works by picking up a signal, it will not detect the system when it is not transmitting.
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Read more: How to Detect a GPS Tracker in a Vehicle
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