Signal Blocker Bag For Keyless Car Key - Anti - Theft Faraday Bags

Simply place the car key fob into the faraday bag and you're protected.

fonefunshop and Disklabs signal blocking faraday bags protect your belongings from EMF, RFID, and other hacking signals!

No worry about thieves amplifying your fob signal and opening car any more, effectively stop your keyless entry fobs from being remotely accessed.

Faraday Bag for Car Keys - Stop Keyless Car Theft

Modern keyless cars can be stolen in under a minute without your keys ever leaving the house. A car key Faraday bag blocks the signal your key fob constantly transmits, so thieves can't capture or relay it - giving you genuine peace of mind whenever you park up.

How keyless (relay) car theft works

Your keyless fob is always broadcasting a short-range signal. Thieves work in pairs: one stands near your house with a relay device that picks up your fob's signal through the wall and amplifies it to a second device held against your car. The car believes the key is present, unlocks, and they drive away - no broken windows and no forced locks.

How a Faraday bag protects your car

Drop your key fob into one of our signal-blocking Faraday bags and it forms a Faraday cage around the fob. This blocks all RF, Bluetooth, Wi-Fi and GSM signals from entering or leaving the bag, so the fob simply can't be detected or amplified. No signal, no relay, no theft.

How to use your car key Faraday bag

  • Slide your car key fob fully inside the bag
  • Seal the closure completely
  • Test it - stand by your car and try to unlock; it shouldn't respond
  • Protect every fob for the car - thieves only need to relay one

Car key Faraday bag FAQs

Do Faraday bags really stop keyless car theft?
Yes - with the fob sealed inside, its signal can't escape to be captured or amplified, which blocks the relay attack used to steal keyless cars.

Will it fit my car key fob?
Our bags fit virtually all keyless entry fobs, including larger smart keys. Many customers keep one by the front door for everyday use.

Should I protect both car keys?
Yes - thieves only need to relay one fob, so keep every keyless fob for the vehicle protected, spares included.

Will my fob still work after being in the bag?
Absolutely. The bag only blocks the signal while the fob is sealed inside - take it out and it works exactly as normal.

📖 Worried about car theft? Read our full guide: How to Stop Keyless Car Theft – how relay theft works and the simplest ways to protect your car.