I always thought the braille on drive-through ATMs was for scales of economy - it's easier and cheaper to have N molds than to have 2N molds (in this case N mol

I always thought the braille on drive-through ATMs was for scales of economy - it's easier and cheaper to have N molds than to have 2N molds (in this case N molds for "everything has the braille and 2N for the case where there is and is not braille).