This new US $100 bill goes into circulation October 8th, 2013. The old ones will have company by the introduction of a new $100 bill, 3.5 billion of them. The Federal Reserve has redesigned this new bill that includes a bunch of security features meant to shun counterfeiting. They have also made use of 2 new technologies that haven't ever been seen before. It took the Feds 17 years to come up with this new bill filled with new technology. Watch Video to learn more.