Seems if you scroll around shopping websites and look at the negative reviews you always see people saying things like “never worked at all” or “stopped working soon after”.
It can’t really be that involved to line a small enclosure with some metal fibers, can it?
What are you trying to accomplish? Prevent RFID tags in a wallet from being read?
Ah, you know, just throw a device in that communicates anywhere from 40 KHz to 40 GHz so that it never communicates until I take it out.
Keep my garage fob from going off, fuck with googlemaps, the works.
You can buy fabric that has metal threads, which works like a faraday cage and put it in a sock or whatever. TitanRF for example.
If you want a diy and cheap option.
I got like a whole square foot for 10 or 20$ years ago and it works like a charm.