Well, there was the Nike poster which used Braille..... not readable as
Braille, but a nifty job naetheless.
Morse? Well, it can either be heard or no, at a rate one can comprehend
or no. ``Voice'' Morse varies from language to language what's used for
dots / dashes (joo dun dun dun joo), and can take some getting used to.
To return to the topic of legibility / readability. Dr. Asaf Degani did
some research on this for NASA and granted me permission to keep copies
on my (personal) web site---they're in the Bibliography.
William Adams, publishing specialist
ATLIS Graphics & Design / 717-731-6707 voice / 717-731-6708 fax
Sphinx of black quartz, judge my vow.