I've used this Disklok since 2016 on my 2012 Jazz and my current 2022 Hybrid.
It's the small size and fits very well, not being too tight or loose. In addition to this I switch off the fob and store that in a Faraday Pouch. The second remote is also switched off and in its own Faraday Pouch.
I tested the pouches by my non-scientific method of going to a supermarket and putting my bank cards in, then scanning at the checkout to see if they worked. All was OK. The down side to the Disklok is that it's a bit of a chore to fit and remove all the time, but if it helps to deter thieves who are prepared to sacrifice their "street cred" to nick a Jazz, then it's worth it to me.
Finally, yes I know I need to vacuum the carpet! Happy New Year.