Home Glossary Hidden Multi Colour Hidden Multi Colour By - 25/01/2018 46 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 Bleeding Blind recognition Clear window 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 Must read 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