The invention relates to a method for decoding an insert (1, 20, 40) provided with a pattern (4, 5, 25, 45), said method being carried out by means of an electronic
system (100) provided with a screen (101) and having specific
software for decoding inserts (1, 20, 40), characterised in that it comprises the following steps: - a step of using as input data a file containing an image of the insert (1, 20, 40) in the
software so as to display said image in a specific area (102) of the screen (101) where a grid of lines appears which is then superimposed on said image; - a step of selecting certain intersection points (110, 111, 112, 113, 114, 115) between the lines (103, 104) of the grid and a contour of the pattern (4, 5, 25, 45) of the insert (1, 20, 30); - a step of restitution by the electronic
system (100) of a code comprising a plurality of components (116), each corresponding to the location of a particular intersection point (110, 111, 112, 113, 114, 115).