I work as an external employee for another company. Once a year, there's a document I need to sign for my company. They email me the document. I print it, sign it, and fax it back. It's easier than messing with going to a scanner and creating a pdf to email. Just get a free scanner app, take a picture of the document and the app turns it into a pdf for you to email. Super easy and fast. Except why not just fax it? I'm at work, the equipment is just down the aisle, It works just as well, and I have little need for the app other than this one time a year.