You don't need to buy a scanner to sign, scan and send official documents -- just follow these steps to use the scanner right on your iPhone.

Then, tap Scan. With your physical tax document laid flat on a nonreflective surface, place the camera directly over the paper and position ... the document (such as black and white), rotate ...

The IRS announced Wednesday that it took an important step to expand its digital scanning of paper returns, a process that was pushed for years by tax professionals and the taxpayer advocate's office.