Wealth on Instagram: "Your Wi-Fi isn’t just connecting devices anymore, it can also map human movement through solid walls. 🚶‍♂️📶 This setup uses Wi-Fi Channel State Information (CSI), a technique that measures how radio waves subtly change as they bounce off objects, including the human body. When someone moves, stands, or shifts posture, those disturbances are captured in the signal. Multiple small Wi-Fi devices transmit and receive signals simultaneously, while software analyzes tiny variat

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