New Traffic Light Security Ink from GSI

Gleitsmann Security Inks (GSI) has launched what it terms the ‘world’s first traffic light for banknotes’ in the form of mouve ^GSI, a unique security feature that will help safeguard cash and other security documents using luminescent colour effects.

Berlin-based GSI has combined its decades of experience in manufacturing security printing inks with the special know-how of its partner Leuchtstoffwerk Breitungen (LWB) from Thuringia, Germany – manufacturers of luminescent materials, special chemicals and unique types of pigments for GSI's security inks. The new security feature required a completely new kind of pigment, which was developed in less than a year.

mouve GSI comprises a combination of two UV colours together with a long-lasting durable green afterglow effect, not previously known to the industry. The patent-pending ink feature combines well-established UV images with phosphorescence and a moving effect of interchanging colours.