Birefringent cross polarisation as a security feature

Mouseover image to reveal security features

TECHNOLOGY FOR QUESTIONED DOCUMENT EXAMINATION

 

Birefringent Security Features

 

Birefringent inks are used as an anti-counterfeiting measure on a wide variety of documents including cheques, currency, credit cards, gift cards, access control cards and authenication certifcates. 

The VSCĀ®6000/HS circular polarizer will image security features printed with chiral birefringent pigments which appear to contrast against the background under the polarizer.

Birefringent inks may also be used in conjunction with other security devices including holograms, IR and UV fluorescent inks, microtaggants, magnetic inks, intaglio printing etc.

 

EXAMINE BIREFRINGENT SECURITY FEATURES USING THE FOLLOWING PRODUCTS

VSC6000/HS the leading document examination system