The Smart Motion Detection System is an advanced IoT solution that leverages YOLO11n pose estimation to detect and analyze human movement patterns in real-time. Unlike traditional motion detectors that rely on simple pixel changes, this system performs sophisticated skeletal analysis (17 keypoints) to distinguish between meaningful human activity and environmental noise. Integrated with EMQX Cloud via secure MQTT, it enables precise automated control of smart home devices like lamps and fans with sub-second latency.