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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.
I don't really understand how this works, so struggle to see any benefits (only drawbacks😐). It does make me thankful my provider is a small local company. Not the fastest, but probably no spying.
https://wifinowglobal.com/news-and-blog/breakthrough-in-wi-fi-sensing-37-service-providers-deploy-cognitives-wi-fi-motion/
It’s been around for almost 4 years. Don’t use rental modems.