Seems like it's describing a system where devs could make options or submenus appear on the controller's screen and you could rotate a click wheel or similar device to select options. Useful for using various consumables in a shooter, or changing power/traction settings in a car game, maybe.
Sony is developing new controller concepts, as indicated by documents filed by the company itself. A modular design could also be considered for the PlayStation 6, potentially offering advantages that vary depending on the game.
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