39c3 is the conference it is being presented at, not the presenter. 39th Chaos Communication Congress, the annual conference of the Chaos Computer Club.

This is a hacker messing around who is presenting to inspire others and get feedback. Many things presented at Xc3 are wildly impractical, potentially illegal, or not even technical at all and more on the side of activism and policy. Most are interesting and fun, which is the main goal.