Home Glossary Hidden Multi Colour Hidden Multi Colour By - 25/01/2018 66 Optically variable security feature, created using a combination of offset and inkless intaglio printing. When viewed under different angles, a hidden image is revealed, changing gradually its colours. + posts Windowed 1D Barcode 2D Barcode Bleeding RELATED ARTICLESMORE FROM AUTHOR Glossary Invisible Personal Information (IPI) Glossary 3D Photo Glossary Invisible Personal Information (IPI) Glossary Hotfoil Glossary Transparent ink Glossary Unique font Related Content Designing identity documents Nick Nugent - 01/10/2015 0 Identities in the blockchain Peter Hoogendoorn - 08/10/2018 0 Designing better banknotes Dr Andrea Firth - 01/10/2011 0 The golden harmony of Fibonacci Anton Bleikolm - 01/02/2012 0 Does money make you ill? Marcus Riemann - 01/10/2014 0 Load more