Xfinity Gateways into motion sensors with WiFi Motion, a new free feature included in the Xfinity Shield offering.

Comcast is activating free Wi-Fi motion sensing on Xfinity gateways, allowing its routers to detect movement at home.

Some people stick with the same router for years, especially if they're somebody who rents their router from their internet service provider.

First look: Comcast has begun rolling out WiFi Motion, a feature that allows compatible Xfinity routers to detect movement inside a home without the need for cameras or separate motion sensors. The ...