Something similar can also be done in Home Assistant with tommysense and espectre if you are interested.
Police already have well developed relationships with ISPs. Now they can request access to the human sensing device already inside your house before they kick in your door.
I have my own router. Does that mean Comcast will call the cops for a welfare check every few days?
Philips Hue does something similar with their lights, where at least three lights can be used to automate lights within a certain zone.
Of course Comcast will sell this information and track us, and find more dystopian new ways.
A good reminder that the corporate-controlled device in your home can be used to spy. Only on your behalf, of course.