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Priority claimed from AU2012101592Aexternal-prioritypatent/AU2012101592B4/en
Priority claimed from AU2012904663Aexternal-prioritypatent/AU2012904663A0/en
Application filed by Innovia Security Pty LtdfiledCriticalInnovia Security Pty Ltd
Publication of MX2013012359ApublicationCriticalpatent/MX2013012359A/en
Publication of MX344944BpublicationCriticalpatent/MX344944B/en
A method for creating an encrypted image, having encrypted image pixels, from a 5 halftone image having halftone pixels and a two-tone image having two-tone pixels, wherein each encrypted image pixel has a first region and a second region, wherein for each encrypted image pixel: both the first region and the second region have a first colour when a corresponding halftone pixel has a first halftone value; and depending on a value of a corresponding two-tone pixel, the 10 first region has one of the first colour and a second colour and the second region has the other of the first colour and the second colour when a corresponding halftone pixel has a second halftone value.