According to a source at Cult of Mac, Apple's currently working on a system that would make NFC-equipped iPhones central to a remote computing solution in which any Mac could temporarily become your personal machine. That would be nice!
Cult of Mac says:
According to our source, who asked not to be named, when a NFC-equipped iPhone is paired with a guest machine, part of the user's profile includes the apps they've purchased through the Mac App Store.
The icons for their apps appear on the remote Mac, but aren't downloaded, our source said.
But if the user opens an app, it is downloaded temporarily to the computer for use. When the NFC connection is broken, the apps are deleted and the computer returns to its previous state.
Apple is developing a way to auto-save files created within the app. The files are transferred to Apple's servers, so anything the user does within certain apps - like creating a document in Pages - is automatically saved and synced with MobileMe.
Cult of Mac's source stresses that this is just an option Apple is exploring and he or she doesn't know if it will actually come to fruition. And it probably won't! At least not for a while. Because how the hell do we expect Apple to discretely beam my entire computing identity to some random Mac when it can't even beam my songs from iTunes to my iPhone? Still, we've seen patents that suggest Apple's at least considering these types of things, and it is nice to think that this whole puffed-up NFC stuff might be useful for something other than buying your groceries with your phone. [Cult of Mac]