Braille Pattern Blank is the name of it, used for sending nothing as a message. Just like how smart all these are, nothing smart!
jake: "⠓⠊⠂⠀⠓⠕⠺⠀⠁⠗⠑⠀⠽⠕⣁"
josh: "JUST BECAUSE IM BLIND DOSN'T MEAN YOU SHOULD BE TALKING IN BRAIL, THIS IS THE 10 TIME THIS DAY"
jake: "You always say that when I speak brail, but when I don't you act like you can't hear me."
josh: "What did you say? I didn't hear you, I'm blind."
jake "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"