Zayn al-Din 'Ali ibn Ahmad al-Amidi (Arabic: زين الدين علي بن أحمد الآمدي; died 712 H/1312 AD) was a blind Kurd scholar most known for inventing a system before Braille that allowed him to study and recognize his books.
His method involved the use of fruit stones as a reading means for the blind.
[1] Salah al-Din al-Safadi (d. 1362) in his book Nakt al-Himyan fi Nukat al-'Umyan (Emptying the pockets for anecdotes about blind people) said in respect to the originality of al-Amidi: "In addition to his knowledge, he used to trade in books.
He could pick out the desired volume, touch the book and determine the number of its pages; he would touch the page and determine how many lines it had, the type of script and its color, and he knew the prices of the books".
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