Handyscan makes your Windows Phone 7 device a mobile document scanner
Handyscan comes to remedy one of these omissions, with its ability to scan multiple page documents, bind them together, and send via email as a JPG or PDF file. The resulting pages can be aligned, cropped and rotated, and even text can be inserted into them with the "typewriter" function. Thus you can fill in forms with no pen, quickly send pages, and many other things.
Now add an optical character recognition function, and we are sold.