Why don't keyless keys have an on/off switch?

It seems that keyless entry cars are being stolen at an alarming rate and that you recommend Faraday bags to put the keys in. Is there some technical reason why the keys just don't have an on/off switch that disables them? This would surely solve the problem and the technology exists to save all the information in the key even when it does not have battery power. A slider switch on the side of the key could easily display when the key is on or off. Am I missing something here?

Asked on 8 October 2018 by Arnold Murphy

Answered by Georgia Petrie
Manufacturers are constantly trying to stay ahead of the curve with improving security systems, but the technology used in car theft crime evolves very quickly. Mercedes-Benz released a statement that said, "On our latest cars we now offer our customers the option of deactivating the radio signal with two clicks of the key." I can't answer your question as to why keys don't have certain security features because we simply don't know. A few manufacturers have mentioned not wanting to publicly discuss the measures they take to increase security because then car thieves could use that same information to exploit security systems. However, it's hard to say how much is actually being done to counteract keyless theft.

I always advise a Faraday bag or steering lock to secure cars because unfortunately with car theft, if there's no one to claim from (which there usually isn't), the claim will be registered as a fault claim by your insurer. As happened here: www.honestjohn.co.uk/askhj/answer/98507/my-car-was...m-
Similar questions
Can you suggest some ways to make my keyless entry car less vulnerable to theft?
Keyless hacking is in the news a lot. How real is it? I understand there are three types of keyless systems - ones that unlock the doors but still have a key to start the car, ones that unlock the car...
Recently, my daughter couldn't get into her car with the key fob a number of times. She had the car checked by a garage and no problem existed at the time, no battery was changed but the problem went away....
 

Ask Honest John

Value my car