Cell phone jammers are not uncommon at all. I think some were marketed to parents to put in their children's cars, wired to the ignition so they wouldn't talk/text and drive. If these things are cell based, that's probably what they are using.
Cell phone jammers are not uncommon at all. I think some were marketed to parents to put in their children's cars, wired to the ignition so they wouldn't talk/text and drive. If these things are cell based, that's probably what they are using.
In reply to Dr. Hess :
Agree, they would have a hard time jamming the signal to the GPS receiver. But jamming the way (probably cellular) that info is transmitted back to the dispatcher is easier.
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