Method for identifying an object

Method of identifying an object comprising the steps of: (a) choose an intrinsic surface of an object to recognize that has not undergone a specific treatment aimed at standardizing the interference pattern which is susceptible to produce; (B) illuminating at least one identification area in said intrinsic surface of said object to be recognized with a coherent light and intercepting at least a part of the light reflected by said identification area, so that an interference is obtained in lighting conditions and certain interception; (C) keep this interference pattern as a reference interference pattern of the object to be recognized; (D) placing an object likely candidate to be the object to be recognized under the same lighting conditions and interception that used to obtain such reference interference pattern and get this candidate object an interference; (E) comparing said reference interference pattern with said interference pattern of the candidate object; and (f) evaluate the likelihood of identity between the object to be recognized and the candidate object depending on the degree of correspondence between said reference interference pattern and said interference pattern of the candidate object.