Trackers are only useful while they can get a signal. Throw a GPS / GSM jammer in it (which until recently you could buy from Amazon for £20) and your £1k tracker becomes a paper weight.
Edited to say: Of course I'm not condoning that you can or should get this kit, I'm just astonished that the equipment to steal cars, ie jammers, key programmers etc, is so freely available!
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MY14 Space Grey F11 530d M-Sport
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