A faraday cage steel mesh cylinder or box whatever apparently electrical signals cannot travel through a faraday cage as well as it protects you from lightning apparently you can stand on the steel especially if it was a cylinder I mean a global type round thing you know what I'm saying I seen a pawn shop in my hometown Portland about a decade ago they were putting up a special room they were using wire mesh over all of the metal studs I was wondering how it was that they were going to keep drywall smooth so I asked them about it they seemed evasive about it can I ask somebody and then they said or they may have told me they do it because they they've taken a loan on an iPhone and then they lose it they apparently you can turn it into a brick if they tell the Apple people their phone with stolen not sold basically pawn shops around here you sell them the item and you get back the right to buy it back I think that's different than an old pawn shop but I guess it's not