Keyless car fobs are always sending out a weak radio signal. In a relay attack, thieves use one device to pick up that signal from your key inside the house and another to pass it to your car, which then unlocks and starts.
A Faraday pouch is lined with metal fabric that blocks radio signals, so a key inside it can't be picked up. Take the key out when you want to drive.
Test it once: put the key in the pouch, close it fully, stand by the car and try the door. If it stays locked, the pouch is working. It's worth testing again now and then, as the lining can wear over time.
Time Do Not Disturb Faraday Bag Signal Shield - Large Family£25.99
Family Sized Car Key Faraday Bag Signal Shield for Keyless Car Fob Security Protection£13.99
Smartphone - Faraday Bag Signal Shield Do Not Disturb Night Time£13.99
Mobile Phone Shield With Window Medium VKF2 - Faraday Bag Signal Blocker£19.99Mealtimes - Faraday Medium-Sized Bag Signal Shield Do Not Disturb Family is listed on Gadgets Galore by our friends at FoneFunShop, a Sheffield phone shop trading since 1994. When you check out you pay FoneFunShop directly, and they pack and post your order and look after any returns. Gadgets Galore earns a small referral commission, which costs you nothing extra.