Motion sensitive keys to prevent relay attacks

[PDM]

Hi Everyone,

Very sad to see the number of vehicles being stolen at present.  I just read about the stolen GSF. As you may know, other manufacturers have introduced motion sensitive keys that go to sleep after say 30s so that when you put down the keys at home, you are not susceptable to a relay attack. When you pick the keys up, they wake up again.

AFAIK, Lexus does not provide this feature. It looks like Ford even offered (at modest cost) to upgrade keys for owners of newer vehicles that were shipped without motion sensitive keys with ones that were motion sensitive.

I have just seen this:

https://www.keylessdefender.org/

Its a small circuit that wraps around the Battery and adds the motion sensitive feature for existing keys. I wanted to know if anyone had tried it?

Paul

P.S. with the number of thefts recently i wonder if we should have a separate forum just for thefts and security?

[NemesisUK]

Many of the recent thefts have been via the Canbus so motion sensing keys wouldn't help.

[PDM]

23 minutes ago, NemesisUK said:

Many of the recent thefts have been via the Canbus so motion sensing keys wouldn't help.

 

But they would for the recent GSF theft reported on here earlier today which was a relay theft.

Better to be protected against both CANbus and relay attack.  Assuming Lexus eventually provide the wheel arch reinforcement plate then thieves may go back to relay as the most common method.

Paul 

[Beamish]

 

Great idea but at €149 per key ( on the Slovak website ) it is not cheap.

However, if it is proven to be effective, it is probably worth the investment.