Youngest asks me if people can be deaf and blind, I was like "Yes they can. Can you imagine not being able to see or hear? They have a special sign language that's by touch."
I went looking for a video and found that in America at least, it was finger spelling until a 'pro-tactile' way of speaking ASL developed quite recently. Here Oscar says that it's "like going from dial up to broadband!":
I wonder if a similar tactile variant has happened in other sign languages?
