Safety device for authenticating origin or issuer of e.g. passport, has first and second images visible under first and second vision angles, where second image is negative of first image and superimposed with first image

摘要

The device (1) has a first image (2) visible under a first vision angle (4), and a second image visible under a second vision angle, where the second image is superimposed with the first image. The second image is a negative of the first image. The images have virtually identical dimensions (6). The first image includes a first array of pixels and the second image includes a second array of pixels, where the arrays have same dimensions. The arrays of the pixels are arranged, so that each pixel of the first image is superimposed with that of the second image. An independent claim is also included for a method for personalization of a safety device.