method of encoding and decoding of data by variation of characteristics of a radiation light device and coding decoding system.

摘要

a coding element (100) at least selectively transparent to optical radiation light, infrared or ultraviolet) incident on a first surface (101) of incidence.where within the volume defined by said encoding element (100) has a plurality of areas (104) previously selected and arranged according to a predefined pattern which variesa characteristic of polarization of the radiation light (200) including accident,as the variation of the characteristic of polarization of the incident radiation is varied in accordance with a pattern of localized biunivocamente alteration associated with a chiave of default encoding, and in which the plurality of areas is disposed between the first surface (101) of incidence, which in use is the luminous radiation.infrared or ultraviolet, and a second surface (102) of the radiation exit optical light, infrared or ultraviolet.the data also are a method of encryption of data that refers to the element in question and a coding system containing the same.