The dollar bill will be replaced by a fermion-boson statistics.

 FBR San Francisco: The substrate for our currency is a cotton-linen blend that gives it extra durability to withstand the banknote printing process in which ink is pressed into the paper. The extra durability of the cotton substrate also means extra durability in circulation. While the low-denomination notes of most nations that use a paper substrate last only a couple of years before they are removed from circulation owing to wear and tear, the U.S. one-dollar note, with its long cotton fibers and linen,lasts nearly six years in circulation. Some countries with a less durable cotton substrate or a harsh climate or circulating conditions have switched to a more durable but costlier polymer substrate. Meanwhile, other countries have replaced their low-denomination paper notes with a high-denomination coin. But because of the longer life of U.S. notes, there’s little reason to switch to a polymer substrate or to replace the one-dollar note with a one-dollar coin. But that’s our view. Tell us what you think.

The federal reserve at San Francisco musing about the future of counting digits.  What does it take to secure an arrangement of electrons and call it a dollar?  I mean, put the chip in my plastic card. Tell the chip it holds a dollar, and make the chip promise no cheating.  Techies do that stuff all the time.  Pure cash, no clearing house needed.