Here is a neat idea and one that I would welcome here in Islamabad as well. A new KFC branch in Karachi requires customers to place orders using sign-language. Granted that imposing restrictions on your customers in similar ways isn’t considered a good business practice, but in this particular case, most people would welcome the idea.
“Sign language is needed to place an order at this Pakistani franchise of the American fast food restaurant, where 27 of the staff suffer from impaired speech and hearing.”
Maybe it would help improve the quality of the food as well (the Isb outlet’s quality sucks enough to be in my black list of places to eat).