Joining Sony Ericsson in the growing list of cellphone-related patents unearthed today, it appears that Apple is doing a good bit of work behind the scenes to ensure that future iPhone users will be able to access and purchase tunes (and video?) from the iTunes Store. Apple's recently filed "Configuration of a computing device in a secure manner" patent lays out in a good bit of detail how users of a mobile device (wirelessiPod?) could access the iTMS and perform "transactions." It goes on to speak of "digital signatures" that would presumably have to be validated before any unexpected downloads took place, and it also pictures a handset (props to Nokia candybars of days past) communicating with an actual PC, which then contacts the "content and commerce" servers on the other side of the wire. In other details, there's photo evidence that some sort of downloadable upgrades / expansions could be available, probably referring to future firmware updates that could be initiated through the iTunes application. Granted, the whole mess of legal jargon is a bit hard for the layman to truly grasp, and it seems that Apple was simply throwing out as many vague words and possibilities to encompass anything that actually gets decided, but be sure to hit the read link anyway for more textual confusion and pictorial delight.