
The secrets of paper and ink
Deciphering the mysterious symbols
Hidden details and microprinting
The faces and the future
YOUR GOAL
Master of Design secrets of the dollar bill

hank Spot the hidden symbols on a dollar bill to discover its surprising design secrets.
hank Dollar Bill Microprint Secrets
On the dollar's lines so fine, (so fine!) / Hidden words, a secret sign!

hank A secret pattern of five small rings prevents modern photocopiers from scanning and printing paper currency.

hank The number thirteen is woven repeatedly into almost every aspect of the dollar bill's design.
Anti-copying rings: The tiny circles of the EURion constellation are hidden on banknotes worldwide to prevent color photocopying.
The production of highly detailed text or patterns that are too small to be read without magnification. American banknotes use this tiny text on Benjamin Franklin's collar to prevent high-tech counterfeiting.
What tiny animal is rumored to hide in the top-right border of the U.S. one-dollar bill?
What optical effect causes the number '100' on a hundred-dollar bill to change from copper to green?
What is the name of the five-ring pattern that prevents modern copiers from scanning currency?
In what year did the U.S. first introduce security threads and watermarks to high-value bills?
What color does the security thread in a five-dollar bill glow under ultraviolet light?
What do the microprinted words 'USA 100' look like to the naked eye on a hundred-dollar bill?
Where is the security thread physically located on a standard U.S. twenty-dollar bill?