ISPRS-Archives The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ISPRS-Archives Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. 2194-9034 Copernicus Publications Göttingen, Germany 10.5194/isprs-archives-XLVIII-2-W9-2025-207-2025 Colored Petri nets for Modeling Processes of Biometric Identification System Petrosyan Goharik 1 Avetisyan Andrey 2 Burmin Valery 1 Knyaz Vladimir 3 Gaboutchian Armen 4 Institute of Physics of the Earth named after O.Yu. Schmidt, RAS, 123242, Moscow, Russian Federation Institute of Geophysics and Engineering Seismology after A. Nazarov of the National Academy of Sciences of Republic Armenia, Str.Gyumri, 3115, V. Sargsyan 5, Gyumri, Armenia Moscow Institute of Physics and Technology (MIPT), 141700, Moscow, Russian Federation Medical Institute, Peoples’ Friendship University (RUDN), 117198, Moscow, Russian Federation 04 09 2025 XLVIII-2/W9-2025 207 212 Copyright: © 2025 Goharik Petrosyan et al. 2025 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://isprs-archives.copernicus.org/articles/XLVIII-2-W9-2025/207/2025/isprs-archives-XLVIII-2-W9-2025-207-2025.html The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/XLVIII-2-W9-2025/207/2025/isprs-archives-XLVIII-2-W9-2025-207-2025.pdf

The article discusses some issues of modeling and digitalization of real-time systems using Petri nets (Petrosyan et al., 2025). The identification and secret key generation system is modeled using the Colored Petri net, which is a modern extension of the classical Petri net. The main goal of modeling the identification and secret key generation system using the Colored Petri net is to identify the presence of errors and randomness, the behaviour of the functioning, in the efficiency of the model. The Colored Petri net (CPN) graph of the identification and secret key generation system describes the workflow, logical actions much more simply, since Petri nets are convenient mechanisms for modeling, checking, validating complex systems. The article discusses some issues of modeling and digitalization of real-time systems using Petri nets. The identification and secret key generation system is modeled using the Colored Petri net, which is a modern extension of the classical Petri net (Petrosyan et al., 2025). The main goal of modeling the identification and secret key generation system using the Colored Petri net is to identify the presence of errors and randomness, the behavior of the functioning, in the efficiency of the model. The Colored Petri net (CPN) graph of the identification and secret key generation system describes the workflow, logical actions much more simply, since Petri nets are convenient mechanisms for modeling, checking, validating complex systems (Petrosyan et al., 2025).