Like when you need to scan a ticket or whatever you need.
There’s two ways of doing this:
1. Inside the Google Drive , main window, there’s a Scan button to the right (camera icon).
2. Or add a shortcut to Scan Drive, found under Shortcuts when you add “apps and widgets” to a screen.
When you’ve found the way you want use, you just lay the paper flat and press the Take picture button.
Play around a little with it, I found that for me it works the best when I include a little background.