As something to install and run for yourself? Sounds cool in theory but awful for your neighbors, and what should be a no go generally. Think of areas where liberty and privacy are conditional, or indeed as a fundamental feature that any ISP could turn on by default in their mandatory router/modem boxes?
If it works reliably, it could make it trivial to implement things like "turn off the lights 10 minutes after everyone has left the room" and "turn on the lights when someone enters". Right now you can still do that with presence sensors, but they're annoying and require hardware for every corner of the room to work reliably.
With its band steering capabilities, I'm convinced WiFi can already make an approximation of your location. It can't deal with things like reflection and interference for positioning of course, but it's still pretty close to working already.
Of course, I mean this as something I'd like to turn on and integrate into Home Assistant, not as something that every ISP router should come with (which is what I fear will probably happen).
