You own some pretty "smart" computers. The laptop on your desk, the phone in your pocket, the system that runs your car. But you're also surrounded by "dumb" computers--simple machines, like your alarm clock, your computer mouse, your refrigerator. We all know that smart computers can be hacked, but what about the dumb ones? Could someone hack your watch? How about your e-book reader? How would it work? What would happen if they did?