The new Privacy Suite starts with a separator made of Electrochromatic Glass, which can be transformed from glass to opaque with the touch of a button. Rear passengers also have sole control a space that can be opened in order to pass objects from the rear to front, or front to rear. A light shines on the opening so passengers can see what's being passed through.
There's also increased acoustic insulation that prevents any sound made in the suit from making it to the front cabin. If the rear passengers need to communicate with the front cabin, they can use the intercom system that Rolls-Royce has implemented.
2018 Rolls-Royce Phantom VIII Specs, Price, Photos & Review