Web and Smart Card System for Infant Immunization Kidist Manaye 1 ,Mihiretu Tigistu 1 ,Kibru Abebe 1 ,Miretu Jaleta 1 ,Kaleab Erdachewu 1 ,Kiya Tilahun 1 ,Markos Alemnew 1 ,Kibru Gebremedhin 1 , Abayneh Guade 1 ,Balew Ayalew 1 1 Jimma university Jimma Institute of Technology Faculty of Computing and Informatics Department of Software Engineering Jimma, Ethiopia Abstract This research focuses on developing a web-based smart card system to modernize immunization record-keeping for pregnant women and infants at Jimma Health Center, Ethiopia. The existing manual paper-based system poses several challenges, such as slow data retrieval, vulnerability to physical damage or loss, and excessive resource consumption. These inefficiencies often hinder the healthcare center's ability to provide timely and accurate healthcare services, making it difficult to track and manage immunization records effectively. To address these issues, we propose the implementation of a smart card system integrated with a web application that supports both online and offline functionality. The smart card will store critical immunization data, while the web-based system will allow healthcare providers to access and update records seamlessly, even in areas with limited connectivity. This approach is designed to improve data accessibility, minimize manual errors, and enable timely healthcare interventions, ultimately enhancing the quality of maternal and infant healthcare at Jimma Health Center. Keywords: Immunization Records, Smart Card System, Healthcare Management, Web-Based Solutions, Data Synchronization, Offline Functionality, object-oriented analysis and design. Introduction Immunization plays a crucial role in safeguarding maternal and infant health, protecting against life-threatening diseases. However, in many low-resource settings, healthcare centers continue to rely on manual, paper-based systems to manage immunization records. This reliance introduces several risks, such as the potential loss or damage of records, slow data retrieval processes, and increased chances of human error. These issues can severely impact the effectiveness of healthcare delivery, especially in centers like Jimma Health Center, Ethiopia, where delays in monitoring and updating immunization records can lead to missed or late vaccinations.