Braille / Duncan Toots

The ATM near my apartment has a message near the keypad written in braille and english that states "This atm offers audio assistance for the visually impaired."

And I suppose that's pretty great. It doesn't explain how it works though. I mean, I see no button that activated this feature. There's no retinal scanner that determines whether or not your eyes work. If I'm blind and I walk up to this ATM and read this message with my fingers what exactly am I supposed to do next?

Do I yell "Activate audi assistance" or do I just state, "Hello. I'm blind and I require $60. My secret pin is 55721. No receipt necessary. Thank you kind money machine."

Of course I don't know for a fact that's what it says in braille. I can't read braille. Perhaps in braille it says, "Press any key twelve times in a row and receive a complimentary $100. Consider it reparation for living life without the gift of site or kudos to those who can see but still learned to read braille for some reason."