Qubitcoins to Stop Counterfeiting

In October, the Federal Reserve rolled out the newest iteration of the venerable $100 bill. It's colorful and chock full of high-tech anti-counterfitting measures like holograms, microprinting and color changing ink. They're pretty good, and sure to give wannabe counterfeiters a run for their money. However there's always the chance that some nefarious actor will get a fancy enough printer to reproduce convincing fakes. What if there was some way to use the weird peculiarities of quantum physic...