You need to include the story it's talking about.
Answer:
The customer gave the waiter a jolly, "Thank you!" as he handed him his food.
Explanation:
(is that what your were looking for?)
This is your answer:
Braille
Braille is something that blind people feel with their hands and from the certain textures they can interpret that into what it reads. It is basically a way to make reading for the blind possible!
Hope this helps!