NSF-funded researchers at Texas A&M have developed STAAR (Situated Touch Audio Annotator And Reader) e-reader that enables blind readers to read the same text sighted readers do. The system allows a user to scan the text with their fingers to hear the words, control the pace of their reading, bookmark a page and highlight important information.
Please watch and or listen to the video for more information. I’ll be looking out if this becomes available for sale.
More information about the grid system and its development is available on Wikipedia.