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Passport under normal and retro-reflective lighting
  Dutch passport under normal lighting  (top)  
  Dutch passport showing retro-reflective features under co-axial lighting (bottom)

Examining retro-reflective security features

Retro-reflective features are elaborate graphic designs that are incorporated into security documents to prevent counterfeiting. They are printed with special coatings that render them invisible under normal light and can only be seen with illumination that is precisely coaxial to the angle of view. Both the VSC 6000 and VSC4PLUS provide the appropriate lighting and imaging systems to enable these features to be examined and printed.

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