Residential internet service provider **Comcast** has rolled out a new feature for its **Xfinity** wireless routers: integrated motion detection. This development transforms standard home networking equipment into a rudimentary surveillance system. The new capability is designed to send push notifications to users when motion is detected near a connected device, such as a TV or printer. The **Xfinity** app provides various settings tailored for different household states—home, asleep, or away—and offers a live feed of motion activity alongside a log of recent events. **Comcast** acknowledges that the system has inherent limitations. Factors such as home size, layout, building materials, and the strategic placement of the router and connected devices can all impact the accuracy and reliability of its motion detection. The company explicitly states it does not guarantee the feature's performance. Beyond the technical limitations, significant privacy concerns have emerged. **Comcast**'s own support documentation reveals that information generated by **WiFi Motion** may be shared with third parties. The policy states: "**Comcast** may disclose information generated by your **WiFi Motion** to third parties without further notice to you in connection with any law enforcement investigation or proceeding, any dispute to which **Comcast** is a party, or pursuant to a court order or subpoena." This explicit clause raises red flags for privacy-conscious users and IT security professionals alike, highlighting the potential for personal data to be accessed and utilized without direct user consent or further notification outside of the initial terms.