Back Souhvězdí EURion Czech EURion-Konstellation German Constelación de EURión Spanish EURion konstelazioa Basque صورت فلکی یوریون Persian EURion Finnish Constellation EURion French EURion csillagkép Hungarian Եվրիոնի համաստեղություն Armenian Rasi EURion ID

EURion constellation

The EURion constellation is made up of five rings.

The EURion constellation (also known as Omron rings[1] or doughnuts[2]) is a pattern of symbols incorporated into a number of secure documents such as banknotes, cheques, and ownership title certificates designs worldwide since about 1996. It is added to help imaging software detect the presence of such a document in a digital image. Such software can then block the user from reproducing banknotes to prevent counterfeiting using colour photocopiers.

  1. ^ "Glossary of banknotes". www.regulaforensics.com. 1 January 2009. Retrieved 22 December 2014.
  2. ^ Baraniuk, Chris (25 June 2015). "The secret codes of British banknotes". BBC Future. Retrieved 30 June 2015.

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