Oh you mean like Windows VISTA's (yes, that one) "SideShow?"
https://www.google.com/search?q=windows+vista+sideshow&biw=2...
https://www.bing.com/images/search?q=windows+vista+sideshow&...
They have had big partners do this, like Logitech, on keyboards like the G15 and G19. It was also on laptops positions above the keyboard.