A blind person can listen to this lecture on playing the piano an derive some information that will help them to learn how to play piano by hearing and by feel. By being familiar and having a feel for the black keys on the piano, the blind person can then have an orientation to the white keys.
I have nine lessons for the blind on my website. If you have a text reader on your computer, then you can determine where the audio links are on this website. CLICK here for the LINK.