Wireless technology knowitall Glenn Fleishman says,
I've been trying for months now to explain the bottom-to-top nature of what an open cell platform running on an open network would look like. Thanks to Apple, I can now use the iPhone location feature, which triangulates on both cell towers and Wi-Fi access points to produce geographical coordinates, to break out the chain of physical hardware up to applications and services that could be opened up under Android or other open phones and networks.
Link.
