Then there are those "magic pens" which are supposed to detect fake bills but actually just detect low quality (high starch) paper. James Randi, in his wild, younger days, would spray real bills with spray starch to cause a little chaos at the bank.
> James Randi, in his wild, younger days, would spray real bills with spray starch to cause a little chaos at the bank.
Terrifyingly devious while causing no physical harm. I wonder if pranksters these days are just as imaginative. Or perhaps the environment is less conducive toward appropriate penalties.
