Might want to keep your car keys in a metal box...
https://news.sky.com/story/relay-cr...otage-of-new-type-of-vehicle-robbery-11145015
https://news.sky.com/story/relay-cr...otage-of-new-type-of-vehicle-robbery-11145015
I wonder if it's a consequence of people being told to leave their car keys by the front door so when they break in to nick them you make it as easy as possible and they leave...Saw this today, knew it was a thing but was interesting to see just how quickly they can get it done.
Got a bit worried and then remembered there's no chance of them picking up a signal from my keys all the way from the front door.
I guess maybe remove the battery from your keys at night.... :S
Perhaps a solid iron box?
A faraday bag is the fix for thisQuite inexpensive for peace of mind.
They used one box to receive a signal from a car key inside the property and then transferred the signal to a second box next to the targeted Mercedes on a driveway.
The car's system was tricked into thinking the key was present and the thieves were able to unlock the vehicle.
Wrapping them in foil is also inexpensive and most likely safer as I've done some looking and the majority of Faraday bags don't seem to work 100% of the time.
Perhaps a solid iron box? Although they seem to be harder to find than I thought.
(...or remove the batteries)
Out of interest, I wonder if such a box could pick up the key from a longer distance than the car could, or if it's a limitation of the key? For example my Toyota smart key you had to be right next to the door for it to unlock, probably 1m away is the absolute max.