| 摘要 |
The invention relates to a method for securing documents that comprises the step of printing a distribution of points on said document, said printing inducing due to printing randomness a point-by-point unpredictable variation of at least one geometrical variation of the printed points and, before said printing step, the step of generating said point distribution so that the points of said distribution have at least one variable geometrical characteristic between them, the geometrical amplitude of the variation generated having the same magnitude as said unpredictable variation. In some embodiments, during the generation step and in said point distribution, at least one half of the points of said distribution are not laterally juxtaposed to four other points of said point distribution, and at least one dimension of at least a portion of the points of said point distribution has the same magnitude as the average of the absolute value of said unpredictable variation. |
