WiFi Sensing and Radio-Wave Human Tracking: A Field Overview
Radio waves pass through walls, enabling an entire field of research in WiFi sensing and radio-wave human tracking. Where cameras stop at surfaces and wearables require contact, radio-based sensing keeps working, tracking people through walls, inferring posture, and capturing physiological signals from the environment. This post surveys the most significant research directions in this field, from dense pose estimation and vital sign monitoring to gesture recognition and dedicated radar approaches. We explore the physics that makes it possible, the applications being developed, and the open questions that remain as radio-wave sensing becomes a real discipline worth understanding carefully.
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