Syavira R. Implementation of a Smart Home Doorbell System for Guest Identification Using ESP32-CAM and IoT-Based Telegram Chatbot Integration. JOTECHCOM [Internet]. 2025 Aug. 24 [cited 2026 Mar. 1];2(3):171-5. Available from: https://journal.technolabs.co.id/index.php/jotechcom/article/view/64