My company offer a custom version of the Talkie OCR app (https://i2s.symisc.net) for vision impaired persons. Basically, the app require minimal interaction with the end user. All he has to do is: Tap a single time anywhere in the screen to launch the camera, take a picture of the book page, magazine, or note, and the documented shall be automatically scanned, and played back on her favourite language (with built-in translation).