A Chinese banknote showing the security features printed with
anti-Stokes inks and illuminated with infrared light.
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Examining
anti-Stokes fluorescent features
Both the VSC 6000 and VSC4PLUS provide infrared illumination
above 800nm that is free of visible light, making it possible to
examine security features on documents and identity cards printed
with anti-Stokes security inks. These inks have been designed to
fluoresce in the visible region of the spectrum when illuminated with
infrared light.
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