Authentication by using S3B detector:

Checking mode using IR light

Image fragments made by infrared metameric inks (relative in color, but with different reflecting ability in IR range)

Checking mode using UV A and UV C light:

Absence of background luminescence of notepaper,the luminescence of different parts of notes (marks, fibers, pattern fragments) due to the presence of special luminescent inks

Checking mode using white transmitted light:

Watermarks, security threads, safety fibers, corresponding images and marks as well as their relative position on the banknotes front and back sides, micro-perforation, micro-perforation

Checking mode using white reflected light:

Printing techniques and its flaws, the presence of micro-lettering patterns and its flaws, possible erasures

Checking mode using side incident light:

Possible erasures, printing techniques, presence of MVC security features, presence of security features with latent effects

Checking mode using Anti-Stokes (980 nm):

Uncovering Anti-Stokes protection