I stopped by the booth at Defcon, but I didn't have an optical drive on my MacBook Air for the puzzle disk. Probably just as well, as it's been some time since

I stopped by the booth at Defcon, but I didn't have an optical drive on my MacBook Air for the puzzle disk. Probably just as well, as it's been some time since last I did anything like this. The contest creators put some creativity into this one!