| 摘要 |
<p>The invention relates to a secure document (1) comprising a first surface (2) and a second surface (3) on opposite sides of the secure document, the elements comprising symbols, text, graphics, or combinations thereof arranged on said first surface (2), a first one of said elements (4, 5, 6, 7) is arranged on said first surface such that it is visible to a viewer in ordinary lighting conditions. In order to make forgery as difficult as possible, a second one of said elements is a hidden element (8) provided without adding colour at least partially on said first element (4, 5, 6, 7) as surface irregularities including protrusions (15) or recesses (16) as compared to other parts of said first element (4, 5, 6, 7).</p> |
