Key Fob Hacking and Prevention Tips


Most people know that today’s cars and trucks use multiple onboard computer systems, but most of us never thought that they could be hacked and stolen without breaking a window or setting off a single alarm!

Unfortunately, it didn’t take thieves long to figure out how to use technology to hack key fobs and steal computerized vehicles. The way the attack works, the thieves don’t even need a key – they can steal the signal from a key inside a home.

The method is known as a relay attack, and it uses a low-frequency radio signal device to access a vehicle’s wireless key fob to open the vehicle and in some cases even start the engine. What can you do to prevent someone from hacking your car?

Prevention Tips:

RFID-blocking pouch:
You can buy a signal-blocking pouch that can hold your keys, like a shielded RFID signal blocking pouch.

Store it inside a metal coffee can:
Also known as a Faraday Cage, putting your key fob in an old-fashioned metal coffee can help thwart attacks.

Wrap your key fob in foil
Since your key fob's signal is blocked by metal, you can also wrap it up in aluminum foil.

Put it in the fridge:
If you don’t want to spend any money, you can stick your key fob into the refrigerator or freezer. The multiple layers of metal will block your key fob's signal. Just check with the fob's manufacturer to make sure freezing your key fob won't damage it.

Put it inside the microwave:
If you don’t want to freeze your key fob, you can do the same thing with your microwave oven. (Hint: Don't turn it on.) Stick your key fob in there, and criminals won't be able to pick up its signal.

By following these helpful tips, you could avoid the unpleasant surprise of realizing your car’s been stolen.

Should you need to report that your car has been stolen, call 9-1-1.

If you need to report anything suspicious, please contact Public Security at 514 369-8250 (24-hr dispatch).