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Comcast is adding motion detection to millions of routers, and I’m worried it’s a privacy nightmare

Comcast is rolling out motion-detection capabilities to its Xfinity routers using WiFi signals to sense movement in homes. The feature, which doesn't require cameras, works by analyzing wireless signal disruptions. Many customers are concerned about privacy, particularly around who can access the data and how it's stored. Comcast says the feature is opt-in and data stays local, but critics remain skeptical.