| 摘要 |
<p>A data carrier is disclosed comprising one or more elements comprising symbols, text, graphics or combinations thereof arranged on a surface, wherein the elements are arranged on the surface as microscopic surface irregularities including protrusions, recesses or protrusions and recesses as compared to other parts of the element, said recesses or protrusions have a different recess depth or protrusion height respectively in at least one first element (1) as compared to a corresponding background element (B1), wherein the at least one first element is visible to a viewer only at predetermined angles of light reflection, wherein the at least one first element and the corresponding background element are arranged on the surface as an array of pixels.</p> |
