iPod clicks reveal details, allows Linux installation

Users have worked out how to reprogram Apple's iPod with their own code using an ingenious acoustic trick, according to NewScientist. In an effort to install Linux on the iPod, a 17-year-old computer science student from Germany, used sound to decode to startup code on the iPod: "They adapted the component that generates clicks - or "squeaks" - as a user scrolls through the on-screen menu in order to extract vital information from the latest generation of the device. This allowed them to install an alternative operating system and make their iPods run games and other new programs." Nils Schneider constructed a soundproof box to record the iPod clicks and decoded the clicks into computer code to understand the hardware setup required to install Linux and other applications.