In the midst of the iPhone hype, which was largely about a decent user interface on a phone for a change, there was some other news about a decent infrastructure that didn't get nearly as much coverage. Unfortunately, the iPhone/AT&T partnership prevents integration with this technology any time soon which is too bad because it might end up being more important.

IPhone-Free Cellphone News - New York Times

"These phones hand off your calls from Wi-Fi network to cell network seamlessly and automatically, without a single crackle or pop to punctuate the switch. As you walk out of a hot spot, fewer and fewer Wi-Fi signal bars appear on the screen, until — blink! — the T-Mobile network bars replace them. (The handoff as you move in the opposite direction, from the cell network into a hot spot, is also seamless, but takes slightly longer, about a minute.)"

The mash-up with this and Fonera is a little mind-bending.