I've seen a computer in 2008 that was like the bottom part of a laptop and between the keyboard and where the hinges would be it had a 3 row braille display. I

I've seen a computer in 2008 that was like the bottom part of a laptop and between the keyboard and where the hinges would be it had a 3 row braille display. It was pretty old at the time and quite thick, with modern technology could be as thin as a tablet. These things have a very narrow audience so they're one digit more expensive than their regular counterparts.