摘要 |
An aspect of the invention provides a security device comprising an array of printed lenses (12) arranged on a first surface of a substrate (16) and a microimage array (14) underlying the array of printed lenses, whereby a synthetic image of portions of the microimages is generated by the lenses. The security device further comprises at least one tactile element (18, 19) arranged on the first surface of the substrate which is of greater or lesser height than the printed lenses, the at least one tactile element being registered to the array of printed lenses. |