Public Bike Rack Anti-Theft System
by Axel M. Grageda, Cazzandra Joyce C. Sagun, Gerald F. Manzano, Jhasper U. Corpuz, Minerva C. Zoleta, Steve A. Villa
Published: February 3, 2026 • DOI: 10.47772/IJRISS.2026.10100278
Abstract
Security and access control remain critical concerns in shared storage facilities such as schools, barangays, offices, and public institutions. Traditional locker systems rely on mechanical keys or manual supervision, which are prone to loss, duplication, and unauthorized access. This study presents the design and development of an RFID-based smart locker system integrated with GSM SMS notification using an ESP32 microcontroller.
The system employs an RC522 RFID reader for user authentication, a 4×3 matrix keypad for manual input, solenoid locks controlled through relay modules for physical access control, and limit switches to monitor locker door status. An LCD with I2C interface provides real-time system feedback, while a GSM module (SIM800L) sends SMS alerts upon access events. A DC-to-DC buck converter ensures stable voltage regulation for the GSM module.