Receipts, Money back, and Security: “Have you ever been to a retail store and seen this sign on the register: “Your purchase free if you don’t get a receipt”? You almost certainly didn’t see it in an expensive or high-end store.” This June 1st posting from Bruce Schneier’s blog (a source of never-ending wonder and conversation) is worth reading and thinking about – and maybe applying to other situations. And as always, read the comments too.