An optically variable, non-iridescent security feature based on intaglio printingA printing method, which also acts as a security feature, and gives the image a raised print effect that is difficult to achieve with other systems. The printing parts of the plate are recessed by engraving into a metal plate. The engraved plates are applied to the paper at very high pressure. The compression of the paper and the transfer of a thick layer of ink give the intaglio print a distinct tactility. More relief. The feature is only perceptible when viewing a hidden text or image in the design from certain angle.