This is nifty.
When I was in art school for graphic design, we were assigned a typography project to create a series of art pieces that used only "found typography", i.e. not fonts on your computer but, rather, type lifted from photographs of lettering in the wild.
As part of my designs, I incorporated Braille found in an elevator. The typography professor rejected this, leading to a 30 minute class discussion around whether or not Braille was a form of typography. In his opinion, it wasn't, and he failed me on the assignment. I still think I was right, and it's one of my favorite design pieces of my own to this day.