I’ve been reading more warnings about car thieves stealing cars by simply using a cheap electronic device to contact your key in your home and relaying the code to an accomplice who can then open your car, start it up and drive off; all while you are asleep and the key safely in the house.

Manufacturers are looking at ways to foil the thieves but while we await a hi-tech solution, here’s a simple precaution you can take. Just keep the key in what physicists call a Faraday cage. That might sound complex but it is simply a metal enclosure to block radio waves. I post a picture of my Faraday cage below.

As you can see this is a simple small tin box. This one came with chocolate peanuts from Marks & Spencer but any small tin will do. I keep my key in this at night and can sleep soundly, knowing it won’t be too easy to steal my car.