I'm vaguely aware that Braille is some sort of special writing that helps deaf people read or something, but I'm a bit baffled by where it turns up.
I've just seen it on the numbers on a vending machine. Which is fine, blind people need to know what numbers they're pressing too. But..... how do they know what those numbers correspond to? Is it some sort of vending machine equivalent of lucky dip?
If somebody is standing next to them so they can ask what number a Mars bar is then surely that person could press the numbers for them too? Otherwise they've got to guess how much it is, because the price isn't in Braille, and guess what number they want.
Seems a bit daft to me. Maybe road signs should have Braille on them too, so blind people know where they're heading when driving.