Turning your phones into cataloguing clients

This post discusses how smartphones could be used to create catalogue records via OCR (Optical Character Recognition).  If I understand the premise correctly, you could take a digital photograph of a book’s title page, for example, then use OCR technology to convert the text (e.g., title, SOR) into a MARC record.  Any thoughts?  I do wonder about the quality of the resultant records since, in essence, you are relying on software to select and input data correctly.  This presumes, also, that the software could distinguish between, say, a title statement and an SOR.  Without further details, it’s hard to assess how this woudl work, but it’s an intriguing concept.