A method and a system for comparing a set of minutiae of a current image with a set of minutiae of a reference image, according to which the minutiae are sorted by their Cartesian coordinates in the image plane from a predetermined point of origin, a common path of similar minutiae is searched in the reference set and in the current set, and it is considered that there is an identity between the two images if the common path is comprised of a number of segments greater than a first threshold.