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@article{209744,
        author = {Chaitanya Pravin Mamidwar and Urvashi khandale and Ayush Fender and Vedika Thaware and Vaishnav Vairagade and Shreyash Mohabey and Dr.Trupti Meshram},
        title = {Campus Eye: An RFID And BLE Based Smart Campus System for Real-Time Attendance And Indoor Navigation},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {13},
        number = {5},
        pages = {3308-3316},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=209744},
        abstract = {Attendance in engineering colleges is still recorded by roll-call or signed sheets that waste teaching time, are easy to proxy and reach students weeks later. This paper presents Campus Eye, a low-cost smart campus system that pairs an ESP32 microcontroller, an MFRC522 13.56 MHz RFID reader and a Bluetooth Low Energy (BLE) beacon at the classroom door with a React Native (Expo SDK 57) mobile application. Every card tap is posted over HTTPS to a Supabase (PostgreSQL) backend, where a timetable-aware resolver marks the student present, or late after a 10-minute grace window, and Supabase Realtime pushes the mark to every signed-in device within seconds. A single sign-in serves students, teachers and the Dean, and the same node’s BLE beacon gives room-level presence for a campus map, a 60-room floor plan, 26 linked 360° panoramas and shortest-path indoor directions. A minute-by-minute evaluation over one teaching week showed that the reader resolved 825 of 1,210 minutes correctly and exposed a fallback rule behind the remaining 31.8% misattribution, which a room-strict rule eliminates. The results show that hardware costing under Rs. 1,000 per classroom can deliver accurate, auditable attendance together with campus wayfinding.},
        keywords = {RFID, ESP32, Bluetooth Low Energy, smart campus, IoT attendance, React Native, Supabase, real-time database, indoor navigation, Dijkstra’s algorithm.},
        month = {October},
        }