Copy: imitate or reproduce an original work.

The article discusses the EURion constellation, a security feature found on many modern banknotes that prevents them from being easily copied using color photocopiers. The constellation consists of five donut-shaped rings in yellow, green, orange, or blue, which are repeated across different areas of the banknote. The pattern tells the copier not to make a scan. The article also mentions other security systems, such as watermarks and digital watermarks, that are used to deter counterfeiting. It emphasizes the importance of copyright and warns against making copies of banknotes without permission from the central bank. The EURion constellation is used in over 40 countries, and its appearance on banknotes can vary in visibility and integration into the design. Some researchers believe that the trigger for anti-copy software is a digital watermark embedded in the notes. [Extracted from the article]