A:AnswerI can scan about 20 photos at a time and sometimes more. The main limitation is the size of the photos. You want to scan similar sizes so they don’t slide around.
A:AnswerI haven't printed them. For me the point is not to print--I have the prints but i want them digitised so save them, protect the from loss, and make them easier to find.
A:AnswerI don't think most driver's license photos would meet the rigid specifications for a passport photo.
But I don't know whether or not you could scan a driver's license with it. I think probably not.