Amazon wants to fill your home with its products. The company sells a voice-activated smart speaker that can tell you the weather (Echo), a security camera that can show you who’s stealing your packages (Ring), and a media streamer that can play films and shows on your television (Fire TV). It also sells dozens of other devices — plugs, thermostats, lights, vacuums, even microwaves — with its chatty voice assistant Alexa stuffed inside. Now, Amazon is looking to own your smart home’s foundation, too: the router.Routers can capture telling information. A router knows the number and brands of the internet-connected devices you have at home, and when you’re at home using those devices. A 2017 Eero report with anonymized data collected from “hundreds of thousands” of its routers shows a glimpse into what information can be gleaned: Charts showing times of day users are most active (Sunday between 9 p.m. and 10 p.m.), and a list of the top 40 devices connected to Eero networks (topped by the iPhone, iPad, and Sonos speakers). If you have more than three Eeros, the company can deduce that you have a big house, too.