Comcast is turning millions of its routers into motion detectors

A new feature added to Comcast's newest routers can detect if there is motion is inside your home without needing traditional motion sensors.

Xfinity gateways XB7 and newer can now act as motion sensors in your home. | Image: Comcast Comcast is bringing Wi-Fi motion sensing to millions of routers that are already in customers' homes, turning the devices into activity monitors. A new update to the Xfinity Internet app,…