Halim, A. et al. 2026. An IoT-Based Smart Doorbell System Integrating ESP32-CAM and Telegram Bot for Real-Time Image Notification and Remote Door Lock Control. JINAV: Journal of Information and Visualization. 7, 2 (Aug. 2026), 147–158. DOI:https://doi.org/10.35877/454RI.jinav4879.