Patent ID: 7380128

Claim:
Reading process for a three-dimensional means of identification ( 100 ) containing a mixture of at least two materials ( 110 and 120 ) that can be distinguished from one another ( 110 and 120 ) in the form of a transparent matrix containing bubbles, the process comprising one step to recognize the heterogeneous internal structure in two dimensions of said means of identification ( 100 ) and another step to verify and prove its third dimension characterized by reading and verifying the three-dimensional layout of the bubbles ( 120 ) contained in the means of identification ( 100 ), these bubbles ( 120 ) including members that had been self-generated during the hardening of said transparent material ( 110 ), by submitting said means of identification ( 100 ) successively and immediately, while the means of identification is maintained in a fixed position, to different lightings to determine by a diffuse lighting a random two dimensional pattern of the bubbles ( 120 ), thereby allowing them to be read and coded, and to confirm by a direct lighting from the same lighting sources the three dimensional aspect of the identification means.