A security feature that is integrated in the background printing and consists of structures that are modulated in terms of direction and angle. When...
An anti-copy feature that consists of transparent intaglio, added to a reflective, gold or silver-coloured image by means of Intaglio printing. The Intaglio is...
Perceptible relief (in the form of shapes or symbols) added for the benefit of the visually impaired.
Touch consists of raised dots created by means...
