Tag: Yen
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The EURion Constellation: The Hidden Anti-Counterfeiting Code on the Japanese 1000 Yen Note
Most people look at a banknote and see art, national symbols, and a portrait. Security professionals see something else entirely: a layered defense system. One of the most fascinating of those defenses is the EURion Constellation, sometimes called “Omron rings”—a subtle pattern built into modern currency to help stop digital copying before it starts. Researchers…