Keyless Entry Security

[DampCat]

How do people secure keyless entry? I'm wondering if i just dont understand how it works.

I've seen a lot of vids of cars being nicked by a couple of crims with a tablet and a phone. One range extender, one app that replicates they key.

I picked up one of those key wallets, it's lined with something. But as a test I took the wallet with key into the car and it still starts. Are they just designed to hamper the range and because it's IN the car, even in the wallet, it's going to work? but it may be enough the block the signal from outside?

I understand if someone wants to take the car, they're going to; but I can at least make it harder than next door's car.

 

[DampCat]

IIRC the car is transmitting and the key responds... and it only works if you're a couple of feet away. I can't see how they can get your key signal unless you hang your keys on the front door.

There are tonnes of vids showing how it works. One guy holds his phone next to the car door, the other walks around the house with a tablet allowing it to boost the signal from the key in the house to the phone by the car.

So does keeping it in a tin stop signal completely or is it just dampening it down enough to not be found from outside?