 Commercial book scanners are not like normal scanners; these book scanners are usually a high quality digital camera with light sources on either side of the camera mounted on some sort of frame to provide easy access for a person or machine to flip through the pages of the book.Some models involve V-shaped book cradles, which provide support for book spines and also center book position automatically.The advantage of this type of scanner is that it is very fast, compared to the productivity of overhead scanners.