Help - looking for app for special needs.

Hey guys,

My name is Kevin and I work as a behaviour interventionist for autistic populations as well as a tech consultant for people from all special needs backgrounds. For the first time, I am working with a person who cannot read or write (he speaks very well though) I am looking for an app for him which will enable him to take a picture of a newspaper or magazine or sign and give him the ability to paste it into a txt to speech so it can be spoken to him.... Any ideas ?