Comcast's Xfinity Shield turns your router into a motion sensor — and it may share what it sees
A free Wi‑Fi upgrade taps existing gateways and stationary devices to map in‑home movement with signal shifts.
Summary <ul><li> Xfinity Shield turns compatible Xfinity Gateways into motion sensors using existing Wi-Fi signals and connected devices. </li><li> Wi-Fi Motion is opt-in and disabled by defau… [+3186 chars]