Key Shield Home (KS3) Larger RF Shielding Faraday Bag for Multiple Car Keys

These bags are the real deal. I wouldn't suggest going for whatever is cheapest on Amazon; instead, look for a credible product from this brand.

Big enough for car key and keys ring with other keys on.

To really know how good this is I would have to have an attempt made on duplicating my keys, however, the bag seems to be of good quality and it looks quite good overall. The functionality of this verses price is probably quite questionable in many ways, its quite a lot of money for something that may never happen but provides a degree of peace of mind.

The faraday pouch works as described

Really well made should last a long time. Car can't detect my key even when stood next to it.

I have had to change my car and my newer one has a 'keyless' entry, I just have to be near the car with the key in my pocket and the door will open. I am keenly aware of the thefts of vehicles by thieves using some kind of booster that can open doors without having the key. I'm not sure if my car would start without the key in it but it was a risk I wasn't prepared to take. I carried out my research, and yes Disklabs is probably one of the priciest BUT it is also the only one that has been police approved 'secured by design' so that's the one I ordered. It is exceptionally well made. I got the bigger one to keep both keys in, they fit with plenty of room for both sets and I can confirm that my car door will not open at all when the pouch is shut fully. For me it is peace of mind and money well spent to protect my car. I would definitely recommend.