http://www.harborfreight.com/chain-swiv ... 98798.html
I would like to find a way to gimmick them so they can be easily (and quickly) opened without tools (shims or picks), but could be cursorily inspected.
I know most escape artists just file down the paws until you can yank them open with a little force. I was thinking that there has to be a way that I could do it were the cuffs have to be ratcheted into a certain position before they can be unlocked. That would allow me to put them on a spectator first, just to ensure they are real

Does anyone have any ideas on the best way to accomplish this?