KeyJail Car Key Signal Blocker

KeyJail Car Key Signal Blocker


My Rating



  • Works Well
  • Protects Theft
  • Great Value
  • Easy to Use


  • No Choice in Colour

The KeyJail Car Key Signal Blocker is a twin-packed pouch that has been designed to block signals for Wi-Fi, GSM, LTE, NFC, RF, and more.

It’s perfect for all types of equipment including car fobs, building access key fobs, security access cards, smart watches, thumb drives, Wi-Fi cards, garage remotes and many smaller electronic devices.

The KeyJail pouch has been designed to give you 100% peace of mind, but does it work? Is it just a gimmick? Time to test it out!


The KeyJail Car Key Signal Blocker comes packaged very neatly in a cardboard box which has picture illustrations and product information printed on it.  The box measures 16.0cm x 11.5cm x 2.0cm and weighs 90G.

KeyJail Car Key Signal
Packaging Image – Image Source – My Helpful Hints (Subject to Copyright)


Upon opening the KeyJail Car Key Signal Blocker box you’ll find the following items. 1x Black Pouch, 1x Brown Pouch.

KeyJail Car Key Signal
Contents Image – Image Source – My Helpful Hints (Subject to Copyright)

KeyJail Car Key Signal Blocker.

The KeyJail Car Key Signal Blocker pouch is made from PU Leather and features a Velcro closure.  Internally the material is soft and Silver in colour.  Each pouch measures (When closed) 14.0cm x 9.5cm and weighs 35G.

KeyJail Car Key Signal
Product Image – Image Source – My Helpful Hints (Subject to Copyright)

The main purpose for using these pouches is to stop those scamming crims from using their high-tech skimming equipment to copy or mimic the unique signal of the key fob from your car.  This is the new trend apparently now, they can copy and use this unique wireless code to gain entry and even drive off in your flash car!

But, this pouch is not all about keys, it can literally block any device from being cloned, if it fits into the pouch you’re good to go.  No signal can penetrate through the pouch, so you’ll stay protected and can walk round town with a swag knowing you’re in safe hands!

And you know what, it works! Who would’ve thought such a simple idea would be so beneficial.  All you have to do is put your device into the pouch and that’s it!

Technical Specifications.

  • Brand: KeyJail
  • Model: Car Key Signal Blocker
  • EAN: N/A
  • Colour: Black & Brown
  • Compliance: CE


These pouches from KeyJail do work, I tried them out and wasn’t able to get a signal form my car fob when pressing the button through the pouch.  Not sure about the twin pack containing a Brown and Black pouch though, I would’ve much preferred the choice and would’ve chose the twin pack to have both Black pouches.  But, that’s just my opinion.  The fact is, this works and for under a tenner you can’t go wrong!

If you want the KeyJail Car Key Signal Blocker for yourself, it’s available for purchase only on Amazon. The RRP for this product is £9.99.

Product sample provided by KeyJail in exchange for a detailed, unbiased review.

Thank you for taking the time to read my post. If you’d like to add a comment or thought on this post, please use the section below. I can also be contacted via the online contact form. Please subscribe for the latest reviews, news, and discounts. Please follow My Helpful Hints on TwitterInstagram Facebook too!