**Mitch Altman** is a hacker and inventor, known for inventing TV-B-Gone, a keychain that turns off TVs in public places. He co-founded a successful SillyValley startup and did pioneering work in virtual reality. He is an author and teacher, and goes around the world giving talks and workshops. Mitch promotes hackerspaces, open source hardware, and mentors others wherever he goes. He is a co-founder of Noisebridge hackerspace in San Francisco, and is president and CEO of Cornfield Electronics.