Robert Sommerville on Twitter: "So breakfast and lunch got me to puzzle 3 on #TuringChallenge . Turns out I've got software that won't allow printing (of even specimen) banknotes. Bet they never
Money is the Universal Commodity | little use-value / maximu… | Flickr
If you try to photocopy a $50 bill it prints a black page. : r/mildlyinteresting
File:Photoshop CDS error.png - Wikipedia
This Is What Happens When You Try To Photocopy Money [PICS]
How to copy money on a printer - Quora
Counter Counterfeiting « Wamblog
Why Can't You Photocopy Currency Notes? » Science ABC
You can't photocopy money even if you try. — Steemit