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Xfinity using WiFi signals in your house to detect motion
(www.xfinity.com)
This is a most excellent place for technology news and articles.
If your provider has implemented it (Comcast is the only one i know of in north america) then Active Queue Management is a huge quality of life improvement that you won't know you were missing unless you already had a router that implements queue management. https://www.cablelabs.com/blog/how-docsis-3-1-reduces-latency-with-active-queue-management