Portable device identifies counterfeit banknotes

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Authentic and counterfeit Real banknotes (R$ 50 and R$ 100) were discriminated using near infrared spectroscopy with a portable instrument associated with principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA).

Banknote analysis by portable near infrared spectroscopy

Correia, R. et al, Forensic Chemistry (2018)