Popular Science -
25 Apr 2013 21:00

The most complicated $100 bill yet For as long as there has been money, there've been people trying to make fake money. In the U.S., the latest effort to stop counterfeiting will arrive October 8, when the next $100 bill is released. The Federal Reserve has mixed in new features to make the bill more difficult to replicate, like a blue security ribbon running down the front. When the bill is tilted, columns filled with the number "100" and tiny bells rotate. Tilt left to right and the columns mo...
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