Identification and authentication procedure without specific reader of a three-dimensional identifier (1), (9), (10), (11) attached to an object or living being by using sensory capabilities of the human being notably its stereoscopic vision capabilities (A) and its tactile sense (A') permitting the appreciation of the particularity of the identifier which renders the latter difficult or impossible to reproduce which are, for example, heterogeneities mixed in a transparent material or surface ridges and/or cavities. The identification or reading is then carried by the visual comparison (B) of a two-dimensional representation image (2) of the identifier (1) (9) (10) (11) stored in a database (4) accessible by a network (5) and the identifier himself.