Examples from the book: Braille keypads

This is interesting because it's irrelevant to Japan.
Americans drive everywhere, and many businesses offer drive-up windows, including banks. But blind people can't drive, so why do drive-up ATMs have Braille symbols on the keypad?
The basic answer is that by law and corporate social responsibility, banks (and their suppliers) want to provide ATMs with Braille dots in the banks, and it's no cheaper to make them without, and somewhat cheaper to manage only one type.