When I’m not writing about cars and motoring, I’m probably doing some kind of sport or working in my garden. For verdicts, scoops, news and analysis from the team, delivered direct to your inbox, subscribe to the CAR newsletter. A poor-quality Faraday bag may stop working because it has failed and can no longer prevent the signal from escaping.

AA Car Key Signal Blocker Wallet - WeeklyDeals4Less Pack of 2 AA Car Key Signal Blocker Wallet - WeeklyDeals4Less

Some people reckon that microwave ovens can also do the job, but this will likely depend on the model, so your mileage may vary. We like the see-through rear compartment that’s handy for tickets, while the neat tab at the end of the sealing flap makes it easy to open.

But it is well built, measures 14 x 10cm and testers say it offers some of the best value for money around. It’s claimed to suit 99 per cent of key fobs and ours fitted, along with three credit cards that slotted into the protected front section.

Car Key Signal Blocker Pouch with Hook Securing Keyring Car Key Signal Blocker Pouch with Hook Securing Keyring

We like the second metal-surrounded compartment at the front, which is ideal for credit card protection. The majority of modern cars use keyless entry technology, allowing for remote access to the vehicle and its ignition.The signal’s encryption is unique for each car meaning one BMW owner can’t use their key to open others’ cars. However, there have been scary cases where premium cars such as Range Rovers and Mercs have been swiped in under a minute. Then get your key out of the Faraday bag, unlock the car, get in and put the key back in the Faraday bag. Keep yourself protected while you are out and about with the Halfords Anti-Theft Car Key Signal Blocker, also known as a Faraday Wallet.