At the end it asks for your I.D or liscense number, (lost my liscense) turbotax says it's optional and won't affect your return, but nope ..... it's mandatory because I got a delay letter from the irs for not sending identification I would've got my liscense copy from my job if they were honest about requiring ID. Not sure how that lie benefits them but just make sure you have identification at the end because it's not optional