Arstechnica has an article about using a smartphone as a document scanner “in a pinch”. It’s fun to see the possibilities that technology opens up.
Seven years ago, I wanted to scan some journals for archival purposes. Using a traditional flatbed scanner would have taken far too long, and wouldn’t have worked well since the pages were bound. So I mounted my Olympus C-8080 digital camera on a tripod, added crude lighting from lamps, and quickly photographed the pages. It may not be perfect, but it’s better than nothing.