One Step Closer To Mobile-WiFi Roaming?

WNN has a good overview of Unlicensed Mobile Access (UMA), the effort by a number of large companies in the mobile space to create a system that will allow for WiFi-to-cellular roaming (well, it's a bit more than that, but that's what everyone focuses on). While the article is quite informative, there are still plenty of people who are quite skeptical about how well this will all work. It's an issue that involves getting past not just technical issues, but business model ones as well -- and that combination may be very difficult to get around.