Web Date: December 8, 2010
Counterfeiters and Forgers, Beware
Experts can easily spot most counterfeit money by its odd texture or missing security features. In recent years, however, skilled counterfeiters have circulated a new generation of "supernotes"—counterfeit bills so realistic that they evade detection by standard methods. Now researchers at the University of Hong Kong have developed a mass spectrometry technique that recognizes fakes and forgeries by chemically mapping the dyes and inks on a document—without destroying the evidence in the process . . .
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