This doesn’t seem like a practical thing for manufacturers to implement. How common are such networks in actuality? Literally the only time I ever encountered unsecured Wi-Fi networks in the past several years were guest networks, and all of those were gated by a capture portal that would have blocked any sort of attempt at telemetry or ad serving.
A deal with comcast and their ubiquitous pseudo public hotspots would simplify that.
xfinitywifi, the comparable similar functionality from CenturyLink, etc, or if you happen to live just a bit too close to a McDonalds or other business that has open WiFi. And of course the possibility of one of your neighbors screwing up his WiFi setup.
There are a lot of ways this can (and has) gone horribly wrong for privacy.
I doubt any TV does this but if I needed to implement it I would just do it the same way that I use wifi in hotels that have captive portals without paying for it: tunnel IP over DNS.
> doesn’t seem like a practical thing for manufacturers to implement.