2 ms·

I use these Faraday cage pouches for my new car keys (I got the two-pack listed "Amazon choice" in the above link) and they are excellent. As far as I can tell

by dave7 8y ago

I use these Faraday cage pouches for my new car keys (I got the two-pack listed "Amazon choice" in the above link) and they are excellent. As far as I can tell anyhow - my car hasn't been stolen (yet!) and if I keep the key in it's pouch I can neither open the doors or start the engine even if I'm right next to the vehicle. An added bonus, it also makes the keys much more comfortable to have in a pocket, holds them in a fairly flat orientation - and stops them from scratching a phone!

bradknowles 8y ago
I've had these. They worked for a while. But then I guess the metalized fabric wore through or something, because after a while they no longer kept the car from starting. The smallest ones I could find would actually hold two fobs, but when filled were large and uncomfortable enough in my pocket that I preferred to just keep the fobs naked. I still haven't found a good solution that actually works for keeping passive fobs secure while they are actually in my pocket.