I am sighted, but my partner is not. Because we live in different places, I learned Braille so that we could send letters to each other. Many of the comments I've seen here echo conversations we've had about Braille. I know he would find something like this invaluable, for reading books himself rather than relying on a voice of some description, and for getting a better understanding of written spelling and grammar. Personally, I would like one too! Having learned basic Braille myself, I would like to practise more often, and be able to read in the dark when camping without disturbing anyone with a torch!