Abstract: The invention relates to a method of biometric recognition by means of an artificial intelligence unit (5) that has access to a memory (3) containing at least one reference image of a body portion of a user and that is arranged to compare it with at least one image that has been captured of the same body portion of a candidate for recognition, the method comprising the step of submitting training images to the artificial intelligence unit, the training images presenting body portions similar to those of the reference image, the artificial intelligence unit being taught to reject them, and the method comprising the additional step of submitting at least one anti-drift image to the artificial intelligence unit, the artificial intelligence unit being taught to accept it. The invention also relates to an associated installation.

Abstract: A method for verifying the authenticity of the iris of an eye of a biometric recognition candidate, comprising the step of verifying the flatness of the iris from two images of the iris in different orientations with respect to the image sensor. Optical recognition method and device implementing said method.