What Actually Stops Relay Theft
Keyless-entry systems read your key fob's signal from a short distance so you can unlock and start your car without pressing a button. Relay theft exploits that convenience: one thief stands near your house holding a signal amplifier while a second stands next to your car, and together they relay your fob's signal far enough to trick the car into thinking the key is right there. It takes seconds, and it works on any keyless fob that's broadcasting.
The fix is simple: stop the fob from broadcasting when you're not using it. A Faraday pouch or box does that by fully enclosing the fob in a conductive shield, so no signal gets out for a relay device to pick up.
Pouch, Bag, or Box — Which Form Factor Fits You?
Soft pouch — for pocket or bag carry
Our Faraday Bag for Car Keys ($24.95) is a soft pouch that fits in a pocket or bag and blocks RFID/RF signals around your fob. Good for anyone who wants to drop the fob in on the way out the door.
Leather pouch — for everyday carry with style
The Leather Faraday Bag Key Fob (from $15.99, also available in Brown, Dark Grey, or as a 2-Pack) clips onto a keyring or bag with a carabiner hook, so shielding the fob becomes part of how you already carry your keys rather than an extra step.
Rigid box — for a fixed spot at home
The Faraday Box for Car Keys ($44.95) is a hard case rather than a pouch, better suited to sitting on a counter or shelf by the door than being carried around. Two-vehicle households often keep multiple fobs in one box.
Getting the Most Out of It
- Use it every time you're not driving. A Faraday pouch only blocks a signal while the fob is actually inside and sealed — leaving the fob on a counter next to the pouch does nothing.
- Check the seal. Zippers, velcro, and fold-over closures all work, but only if fully closed with no gap.
- Test it once. Seal your fob inside and try unlocking your car standing a few feet away. If the doors don't respond, the shielding is working.
Browse the full car key Faraday collection to compare sizes and styles side by side.
