Web-Based LINMAS Attendance System with Geolocation-Based Location Radius at Sudiroprajan Subdistrict Office
DOI:
https://doi.org/10.59890/ijsas.v4i8.45Keywords:
Attendance System, Geolocation, LINMAS, Web-Based, GeofencingAbstract
The LINMAS attendance system at Sudiroprajan Subdistrict Office still relies on conventional manual methods, which are vulnerable to location fraud and administrative inaccuracies. This research developed a web-based attendance system integrating geolocation technology to validate attendance within a predetermined location radius. Using the Research and Development (R&D) approach, the system was built with HTML5, PHP CodeIgniter, MySQL, and the Geolocation API. The Haversine formula calculates distances between user coordinates and the office reference point. Functional testing achieved a 100% success rate for valid attendance scenarios, while usability evaluation yielded a SUS score of 77.5 (Good category). The system effectively prevents attendance fraud by blocking clock-in attempts from outside the designated radius, thereby improving LINMAS personnel accountability and administrative efficiency at the Sudiroprajan Subdistrict Office.
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