Robert is vision impaired and he's missed the mobile revolution. He knows that there are a lot of books available on Amazon in eBooks. How can he have them read back to him? Leo says that the Kindle will read back to him, and it's a decent robotic voice. But some publishers disable the feature, which is a shame.
Here's a link to a list of screen readers - http://usabilitygeek.com/10-free-screen-reader-blind-visually-impaired-users/. The federal government also has a program with a listening library called Books for the Blind.