A camera is required as an input device to interact with the game or to activate game content.

Camera is part of the Input Devices Required category. Input devices required to play the game. Self-assumed ones per platform (i.e. Gamepad for PS2) have no reason to be listed unless there are games that do not require them for selected platform.

If some device is required, it is also supported. But not all supported devices are required. So same type of input device should only be selected as either Required or Supported, never both.