Spotting fake bank notes with butterfly colour – Physics World

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How To Spot Fake Bank Notes From All Currencies Including Polymer

How to spot a counterfeit banknote!

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How To Spot Fake Bank Notes From All Currencies Including Polymer

Are the world's major currencies easily counterfeited?

How to spot a counterfeit banknote!

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Butterfly-inspired technology to ensure safe currency

From butterflies' wings to bank notes -- how nature's colors could