Fort Knox in Box: How ATMs Work

A heavy steel vault protects 2 cassettes that each hold over 1,000 bills. A sophisticated assemblage of sensors, rollers and conveyors ensures the correct number of bills is distributed to the account holder. MACHINES: HOW THEY WORK Thursdays 10/9c on Science http://www.sciencechannel.com/tv-shows/machines-how-they-work/ Subscribe to Science Channel: http://bit.ly/SubscribeScience Facebook: https://www.facebook.com/ScienceChannel Twitter: https://twitter.com/ScienceChannel