If you built it, I think you'd find the real problem is having enough resolution in your fingertips to work out what the hell the picture is about. Lots of peo

If you built it, I think you'd find the real problem is having enough resolution in your fingertips to work out what the hell the picture is about. Lots of people who become visually impaired later in life can't read Braille as their fingertips aren't sensitive enough, especially if they did manual work earlier in their life. Working out a picture is even harder. As a side note about this, William Moon invented 'Moon script' which was a kind of simplified alphabet in embossed writing to help visually impaired people read. It was invented a little before Braille invented the raised dot patterns, and even after Braille became popular, Moon still had it's niche for those who didn't have the resolution for Braille. As Moon was based on the Roman alphabet, it was also easier to learn for people who'd been able to read then lost their sight.