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Abstract
This project presents the design and implementation of "Setram Go", a hybrid mobile application forpurchasing public transport tickets and managing subscriptions in Ouargla, Algeria. During theconception phase, several UML diagrams were used — including use case diagrams, class diagrams,and activity diagrams — to model the system architecture, user interactions, and core functionalities.The application aims to solve problems related to manual ticketing, the absence of electronicpayments, and limited accessibility. Developed using React Native (frontend), Express.js (backend),and MongoDB, the app supports electronic wallet recharge, QR code validation, bilingual interface(Arabic/English), and real-time station mapping. Functional testing confirmed the application's corecapabilities, with future work planned to integrate real payment gateways, offline functionality, and improved security.
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Copyright (c) 2025 AZZAOUI Nadjet, Bessedike Zakaria, Touhami Mohammed Lazhar, Osmani Youcef, Koudia Souhil (Author)

This work is licensed under a Creative Commons Attribution 4.0 International License.
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References
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References
C. Arribi and S. Boutarfa, "Digital Transformation: Opportunities and Challenges of Digitization in Algeria," Economic Researcher Review, vol. 12, no. 1, pp. 37-55, 2024.
U. C. Portion, I. Chidimma, and C. E. Nwokike, "Digital transformation of public services and its influence on the business landscape in African states," International Journal of Research Publication and Reviews, vol. 4, no. 9, pp. 467-472, 2023.
N. Lakhdari, "The impact of digital transformation on economic growth in Algeria: an econometric study," Al Bashaer Economic Journal, vol. 10, no. 2, pp. 585-600, 2024.
C.-C. Chen, C.-H. Chang, and K.-L. Hsiao, "Exploring the factors of using mobile ticketing applications: Perspectives from innovation resistance theory," Journal of Retailing and Consumer Services, vol. 67, p. 102974, 2022, doi: https://doi.org/10.1016/j.jretconser.2022.102974.
A. P. Aristio, M. A. F. Iskandar, A. P. Ramadhansyah, S. Supardi, G. P. Utomo, and A. N. Parahita, "The intention of using mobile ticketing in online travel agent," Procedia Computer Science, vol. 197, pp. 273-281, 2022, doi: https://doi.org/10.1016/j.procs.2021.12.141.
J. Bian, W. Li, and C. Lee, "Current practices and emerging trends of transit apps for fixed-route bus services in the US," Journal of Public Transportation, vol. 25, p. 100052, 2023, doi: https://doi.org/10.1016/j.jpubtr.2023.100052.
S. C. Kim, D. Yoon, and E. K. Han, "Antecedents of mobile app usage among smartphone users," Journal of Marketing Communications, vol. 22, no. 6, pp. 653-670, 2016, doi: https://doi.org/10.1080/13527266.2014.951065.
L. Gracz, "The use of mobile applications for purchasing tickets for public transportation in Poland," European Research Studies Journal, vol. 26, no. 4, pp. 86-95, 2023.
Meta Platforms, "React Native Documentation," 2025. [Online]. Available: https://reactnative.dev/docs/getting-started
Developers, "Google Maps Platform Documentation," 2025. [Online]. Available: https://developers.google.com/maps/documentation
Express 5.2.1, "Fast, unopinionated, minimalist web framework for Node.js," 2025. [Online]. Available: https://expressjs.com/
MonogoDB, "MonogoDB Documentation," 2025. [Online]. Available: https://www.mongodb.com/docs/
Microsoft Learn, "Best practices for RESTful web API design," 2025. [Online]. Available: https://learn.microsoft.com/en-us/azure/architecture/best-practices/api-design
Expo Docs, "Expo Camera," 2025. [Online]. Available: https://docs.expo.dev/versions/latest/sdk/camera/
auth0 Docs, "JSON Web Tokens," 2025. [Online]. Available: https://auth0.com/docs/secure/tokens/json-web-tokens
