New details have emerged from patents filed late in 2011 about the potential capabilities of the Wii U’s controller. The mic embedded in the controller could be used for voice recognition software that would allow players could give voice commands in-game and the camera in the controller could be used for facial recognition.

Video phone features are also mentioned and detailed (sounding not unlike Skype) and there is potential for peripherals like a gun or a keyboard. Perhaps most excitingly is the possibility of a touchscreen on the Wii U controller having a HD resolution and outputting 3D images.

Source: Kotaku.com