I see what you are saying and understand that problem but I was picturing something like this type of can from Home Depot:
https://www.homedepot.com/p/Behrens-31-Gal-Galvanized-Steel-...
I use these as planters for my orchard fruit and nut trees. They have no open holes. I have to drill the bottoms or side to add drainage so that the trees don't drown.
Sorry I thought you meant to leave the lid off.
That would probably work well with the lid on floor, bin over the top.
I work with an MR scanner. Bluetooth seems to work through the cage (or did on the previous scanner I used) and cellphone calls work though it fine as long as the door is just a tiny bit open.
It’s quite interesting to play with.
The cage drops signal 100db (well, that the spec it’s built to).
Rf leaks are the worst. You can run the scanner in a ‘detect rf’ mode to try find any leaks. They can be a pinhole, a faulty light, a poorly sealed escape hatch etc.
A bad one can take a very long time to find and it’s enormously expensive to do so.