New Zealand researchers have developed (http://news.bbc.co.uk/2/hi/technology/3733249.stm) a way to overlay detailed animations and images on textbooks, children's picture books and any other title that uses illustrations.

The viewer resembles a pair of spectacles on a stick or hi-tech opera glasses and is held in front of the eyes while a book is read or paged through. "You can get God's eye view if you want," said Dr Billinghurst, "or you can go in and be part of the scene."