Many phones have WiFi, and there are hotspots in all sortrs of places these days, so wouldn't it be cool if you could use them for roaming, regardless of provider?
The goal is to simplify how cellphones can connect to those hotspots, by developing a technical framework for seamless WiFi roaming.
The new standard will be based on the WBA's "Next Generation Hotspot" initiative and the WiFi Alliance's"Passpoint certification" system, taking cues from the GSMA's established roaming experience.
The basic principles have already been laid down, and just require network formalities such as security and billing to be taken care of.
No peep on when we might start seeing dividends, alas, so for now your "subway ride" can continue in (relative) peace.