Don't quote me on this but object recognition on the level you are talking about is afaik still on the research table. Very complicated to identify things like that based only on images, especially intelligently without building a database of "known" objects to compare with. Barcodes and rfids are two ways of identifying stuff (a camera can be used to identify barcodes, think there is something like that for s60 for instance) but that's beside the point...

Text recognition on the other hand sounds semi-feasible to me, but don't know what technologies there are. Most documents are really available electronically today anyway...?