The 2007 Defcon badge (currently selling on eBay for $202.50) came with its own SDK, which explains why, by Sunday, a couple of attendees had hacked theirs to play music from their iPods. They were two of some 50 contest winners, of whom the most tired – and wired – were the 20 person team who spent 22.5 hours solving the “mystery box” (the hack required knowledge of cryptography, electronics, lockpicking, literature, and rotary phones).