This lecture introduces the concept of smart wearable systems focusing on ECG monitoring. The instructor discusses the need for wearable systems in healthcare due to lifestyle-related health issues. The lecture covers the challenges in ECG signal processing, including noise filtering, signal delineation, and feature analysis. The goal is to create a system that can accurately detect arrhythmias and provide real-time feedback to doctors, ultimately aiming to improve preventive healthcare by enabling early detection and personalized treatment.