5G Can Track You Without Your Phone

This video explains RF Sensing and Joint Communication & Sensing (JCAS), a real wireless capability shaping the path toward 6G sensing networks. No hype. Just engineering, limits, and security implications. This video explores the emerging field of Joint Communication and Sensing (JCAS), where wireless networks can transmit data and detect physical movement simultaneously. By analyzing how radio waves reflect off objects and people, technologies like Wi-Fi and 5G can identify human presence, motion, and gestures — without any handheld device. While device-free sensing is technically possible today using Massive MIMO, beamforming, and multipath signal analysis, it remains largely a research capability, not a widely deployed feature. At scale, these sensing use cases — especially for industrial monitoring, safety, and emergency response — are more likely to define the 6G era, rather than current 5G deployments. Finally, the video highlights a key security paradox: stronger user-level encryption combined with new risks of infrastructure misuse introduced by software-defined and virtualized telecom networks.