10. A method, comprising: performing an optical capture from a book using an optical component of a mobile device identifying the book from the optical capture, using the mobile device, by at least: identifying a text fragment within the optical capture, and locating, a position in the book containing the identified text fragment; retrieving a media sequence associated with the book using the mobile device; and presenting the retrieved media sequence using the mobile device by at least presenting the retrieved media sequence at a time in the time-indexed media sequence that corresponds to the located position in the book.
10. A method, comprising: performing an optical capture from a book using an optical component of a mobile device identifying the book from the optical capture, using the mobile device, by at least: identifying a text fragment within the optical capture, and locating, a position in the book containing the identified text fragment; retrieving a media sequence associated with the book using the mobile device; and presenting the retrieved media sequence using the mobile device by at least presenting the retrieved media sequence at a time in the time-indexed media sequence that corresponds to the located position in the book. 11. The method of claim 10 , wherein the book comprises an academic textbook.