Comcast is turning tens of millions of its home routers into motion detectors. The feature, called WiFi Motion, uses a home’s own WiFi signal to sense movement, without any cameras. It is part of a new service called Xfinity Shield, which the company began rolling out on 18 August.
Source: [TNW](https://thenextweb.com/news/comcast-xfinity-shield-wifi-motion-privacy)