MONOJOYFaraday Box for Key Fob: Key Signal Blocker Box Key Case Protector Case, RFID Key Fob Protector, Faraday Cage, Key Signal Blocker - Rfid Boxes for Car Keys Phones Credit Card

The product works exactly as advertised. It is effective and inconspicuous. I have tested it with texts and phone calls from friends and co-workers and it has blocked all signals that I have thrown at it thus far. Blue-tooth and wifi are also no problem for it. The product itself is great looking and it is made of good materials and will last for some time. The copy of a handwritten note by the owners of the online store that sells this on Amazon was very touching and a nice detail.My only suggestion to them is either to put a title on the "book" and or allow the client to choose one for themselves and have it engraved on it the spine and on the front cover.

When your fiance is an interior designer, you can't always jump on purely functional, especially with things that are likely out in the open.This Book Box checks off ALL the boxes, for me AND the better half.Tested functionality via Tiles, which are attached to my keys...with app open, as soon as I drop them in the box and close the lid, the signal instantly drops and goes into a 'connecting' mode as it tries to locate the item...this is all while standing about a foot from the box, mind you!Definitely recommend.

It works, but I am disappointed that you need to use an insert on top inside to make it work. Without the insert, it did not work. As a librarian, I appreciate the book shape.

Works very well. If I don't insert the extra blocking section, I can only operate the car keyless fob function if I bring the entire book/box within three feet of the car. Further away and the signal is reduced so much the car doesn't see it (that's good). IF I put the extra blocking piece inside, even within a foot of the car door the signal is so reduced it will not open the door which is VERY good. My usage will be to therefore not use the extra piece that much but if I get paranoid, I will (maybe at night).

I was skeptical at first, so I had to try it out myself. Stood next to my car with the keys inside the book to test it, and it would not open the car! So if you’re wondering if it works, it does work!

Mine does not work. It worked the first day I tried it with the factory key fobs. I upgraded to an aftermarket car alarm and it does not stop that signal. I tried it again today and my car unlocked when I took the box out to my car. I had to line the box and lid with heavy-duty foil to get it to work.

Great looking faraday box.. got it after I got the dongle keyholders, because those were incredibly inconvenient (bc they worked so well). Now I never forget where I put my keys, and my car is protected from rfid antennae attacks.

I love the quality of this box and the perfect size that allows you to use as a vanity box for key fob, wallet and cell phone. Great protection in an attractive package. I highly recommend.