<![CDATA[Manual employee attendance management remains widely used, despite its vulnerability to data manipulation, delayed recaps, and limited location flexibility. This study aims to design and develop a cross platform mobile attendance application using the Flutter framework, equipped with a selfie photo feature as visual proof of attendance and the Global Positioning System (GPS) for real-time location validation through a geofencing mechanism. Data management is handled using a XAMPP backend consisting of the Apache web server, PHP programming language, and MySQL database management system. Communication between the Flutter application and the server uses an HTTP-based RESTful API with JSON as the data exchange format. The software development method employed is the Waterfall model. Testing was conducted through Black-Box Testing covering 35 test scenarios and User Acceptance Testing (UAT) involving 40 respondents. Black-Box Testing results showed all scenarios passing with a 100% pass rate. The UAT yielded an average score of 86.8 out of 100, categorized as Very Good. GPS validation accuracy averaged 95.5%, while the attendance processing time efficiency improved by 68.4% compared to the manual system.]]>
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