Patent ID: 8727222
Filing Date: 2014-05-20
Classification: G06K

Abstract:
1. A method for authenticating a code with geometric areas whose shapes and/or colors vary according to a message, comprising: a step of generating said code with variable geometric areas, according to a message, to provide geometric areas; a step of generating a digital authentication code to provide numeric values; an image formation step in which an image of said geometric code areas is formed, comprising a part of said digital authentication code in cells formed into at least some geometric areas and/or in at least one space between geometric areas; wherein, in each geometric area comprising at least one cell representing a part of the digital authentication code, the area of said cell is less than a quarter of the area of said geometric area; and a step in which an imprint of the generated image is determined, said imprint being a function of a degradation of the digital authentication code during the image formation step.