Recommended reading: The secret codes of British banknotes
The BBC has a very interesting article dated 25 June 2015 by Chris Baraniuk entitled “The secret codes of British banknotes,” which discusses the so-called EURion Constellation (aka Omron rings) patterns’ role in deterring digital counterfeiting. Unmentioned in this article is that the simplest way to defeat this anti-counterfeiting featureRead More…