Comcast reveals what its motion-detecting routers track

Comcast's new Xfinity Shield feature allows routers to detect motion, but customers have raised privacy concerns. The company says it retains a week of motion history and that the data could be subject to subpoenas. The feature is opt-in, but some users are considering replacing their equipment.

The WiFi Motion capability operates by analyzing fluctuations in Wi-Fi signals between newer Xfinity Gateways and connected devices, requiring no cameras, audio recording, or image capture. Comcast spokesperson Meagan Sloan confirmed that when customers opt in, motion activity records remain accessible in the Xfinity app for seven days. The company acknowledges that valid legal processes such as subpoenas, court orders, or search warrants could compel disclosure of this information.

The feature arrives as part of Comcast's broader Xfinity Shield platform announcement. Customer backlash has been notable, with some subscribers on Reddit expressing distrust and considering replacing their leased gateways with personally owned equipment. The controversy reflects broader concerns about data collection by private companies, particularly in light of recent reporting on how authorities obtain information from firms like Flock Safety.