| 摘要 |
The support e.g. card (10), has invisible anti-forgery units subjected to change in appearance in event of attempt to do personalization. The units are formed by subdividing a pixel into a matrix of specific number of dots, where each dot has a different color density to obtain an average color density of the matrix that is equivalent to the predetermined color density for the corresponding pixel. Certain dots of the matrix are pre-sensitized to induce more or less rapid darkens of the color of the dots in the event of personalization, with respect to the other non pre- sensitized dots. An independent claim is also included for a method for securing a data or information support. |
