I would say that they just want to take care of clients who can not be identified or do not have a bank account or credit card so they are informed of other options such as going into an IRS office personally, faxing docs or mail sending them to 3651 S IH 35, STOP 6579 AUSC. AUSTIN TX 73301-0059 send documents like 1040 for the years filing, along with w2s, schedule , etc.  2 ids like dl , passport  and Birth cert.,and a bill , the letter 5071c ,