How do paper money security features stop counterfeiting?
Quick Answer
Banknotes use layers of security such as watermarks, holograms, microprinting, and special inks that are hard to copy. Many notes also include serial numbers and embedded threads for verification.
The Full Story
Modern banknotes are designed with multiple overlapping security features so that copying one detail is not enough to fake the note. Watermarks appear when held to light, security threads run through the paper, and colour-shifting inks change appearance under different angles. Microprinting and raised printing add details that are difficult for ordinary printers to reproduce. Central banks update designs periodically to stay ahead of counterfeiters. The euro, U.S. dollar, and many other currencies use several such features together.
Key Facts
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