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Counterfeit methods are more sophisticated than ever before, so it is necessary to implement as many different methods as possible to get reliable information on the origin of the banknotes. FTIR spectroscopy provides exactly this, a different approach to the identification of different banknote components, from the paper itself, to the characterization of the inks, holograms and watermarks. This paper will examine similarities and differences in the composition of paper used for making banknotes in six different currencies, and at the same time deal with the characterization of the unique features of a particular currency. Also, consistency within the particular currency will be examined by comparing multiple banknotes of the same denomination.
banknote ; FT-IR spectroscopy ; counterfeit
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