On my way to Dallas-Fort Worth airport today, I snapped this picture of the sticker on the inside of the back-seat passenger-side window of my taxi. It warns "The method used to authenticate credit card transactions for approval is not secure and personal information is subject to being intercepted by unauthorized personnel." There's some history there, I'm guessing. Consumer warnings are very nice, but I'm left wondering why they don't just update the firmware on the credit-card box with some decent crypto (unless this is because they use a CB radio to call in card numbers, which is pretty danged foolish).
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.