![]() ![]() ![]() Other currencies around the world, it soon emerged, were printed with the same pattern. So a recurring pattern of five circles existed on sterling and euro banknotes, on both the front and back. The pattern was there, too, but on the front of the note it was hidden in a motif of printed music: the circles were printed as the heads of the musical notes. I stared at it for a while and I saw that the constellation inside this pattern was recurring.” On the 10-euro banknote, I spotted this particularly obvious pattern of little circles. How did the copier know what it was being asked to print? “The euro banknotes had just come out,” says Kuhn, “and I had a 10-euro banknote in my wallet. Instead came a message printed in various languages – explaining that copying banknotes was illegal. But no colour reproduction of the note appeared in the tray. He closed the lid, pressed the copy button and waited. Kuhn placed a British £20 note on the glass surface to scan. “We went straight for the banknotes.” (Don’t try this at home – the photocopying of banknotes, in the UK and in other countries, is illegal). “We were students,” he recalls with a laugh. It didn’t take him long to decide on the best way to test its abilities. It was the early 2000s, and word of the new-fangled contraption quickly got around – including to computer scientist Markus Kuhn, then a PhD student. Don't forget to log off after you're done! Someone else could photocopy and use your funds by accident.A brand-new Xerox colour photocopier had just arrived at one of Cambridge’s industrial labs. To log into an MFP, tap your KPU card on the black scanner to the right of the screen on the machine (there is a red arrow on the front of the machine pointing to the scanner).To add money, you have to be on campus and load credit to your account by credit card. You will need to have sufficient funds loaded onto your Papercut account to print from any campus MFP. ![]() If you want colour, double sided, and/or 11"x17, make sure to select the colour printer and correct settings from the Print Menu before you send your job to the MFP.
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