AlpPCR dialogues directly with the plant automation, with which it exchanges signals related to the area in which the billets are being handled (e.g., a firing roller way), preparing the field devices for acquisition. A presence photocell, supplied with the system, determines the correct instant at which to make the image recording, which is then processed by the processing algorithm developed by Alping Italia. By means of multispectral imaging techniques, the three-dimensional characteristics of the surface under analysis are reconstructed: within it, the depressions constituting the segments of the individual characters are identified; these portions are isolated from the disturbances and agglomerated, reconstructing the character in its entirety on which identification for decoding is finally carried out. The results of each processing are displayed on the graphical interface, available both locally and as an application with client-server architecture that can be installed on any PC connected in the same network as the processing server, where the decoded strings are superimposed on the acquired images. Contextually, the same data are also sent to the plant PLC for material tracking management. Upon request, communication to a database for data historicization can also be implemented in the system.