That thing looks like a burden to me with the idea of putting the key in there every time and close the latch but I have known someone many years ago who had their keyless car disappeared over night and they kept their key fob in their pocket in the bedroom upstairs which was quite a distance away.
They seem to be selling many of these on Amazon with so many good reviews and very few of them complaining that they can still start their car but not always in detail how.
https://www.amazon.co.uk/Faraday-Protector-Blocking-Shielding-Protection/dp/B07W94QLKM/Faraday Key Fob Protector Box, RFID Signal Blocking Box, Faraday Bag Signal Blocking Bag Shielding Pouch Wallet Case for Cell Phone Privacy Protection and Car Key FOB
Brand: briidea
Package Dimensions : 14.48 x 12.7 x 8.38 cm; 295 Grams
Date First Available : 8 Aug. 2019
4.6 out of 5 stars 1,290 ratings
77%5 star
14% 4 star
5% 3 star
1% 2 star
3% 1 star
Anika vdb Reviewed in Canada on 23 February 2021
1.0 out of 5 stars Scam!
Do not buy this product. I had read so many positive reviews and was hopeful with the product. It doesn’t work I was able to start my car while my key was locked away in this box. Don’t waste your money!
25 people found this helpful
Not very good if the car can be started with the key fob away.
J. David Dean Reviewed in the United States on 2 December 2020
1.0 out of 5 stars Does not work. Full Stop.
I was advised by my police department to purchase the box after my car was robbed. Apparently a thief in my area has a device that lets him trigger car fobs and open people's cars even when they are locked. I was advised this box would prevent that signal. I have diligently kept my car keys in the box since then. This morning, my car had been robbed again. The box fails to prevent the transmission of signal, meaning it does not work and is therefore a 0-star product.
Someone put a battery in there and they said it caught alight.
Richard Tworek
1.0 out of 5 stars Do not put Lithium Batteries in it! It will literally light on fire!!!! Mine did!!!🔥🔥🔥
Reviewed in the United States on 4 September 2021
Verified Purchase
IT CAUGHT ON FIRE 🔥!!!!!!!
One person found this helpful