**Mitch Altman** (@maltman23) 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 Silicon Valley 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.