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[–] lacrimamosa 0 points 0 points (+0|-0) ago 

FYI the method they used works on all cars with key fobs that don't require the key to be physically plugged in and turned.

If you're sitting in your office at work, the hackers have a very sensitive radio, and a very powerful transmitter, and they re-transmit the car's challenge so powerfully that the key in your pocket inside the office is able to hear it. Then, the key in your pocket inside the building transmits its response.

The car, out in the parking lot, can't hear this response of course. But the hackers have a very sensitive receiver. They pick up the key's response and rebroadcast it so that the car can hear. The car will then unlock. Repeat the procedure to start the engine.

This has nothing to do with Tesla.