[WiiUHaX]

vashgs a member on GBATemp posted a video showing him use the Wii U GamePad on his PC, here is a quote from the thread, followed by the video:

A couple of days ago I read a thread concerning the use of Wii U’s GamePad as an input method on one’s PC. All of the posts I read basically reiterated the same issue: “You need a hacked Wii U to better understand the data transfer protocol used with the GamePad.”
I, for one, think that notion is just silly. We have a perfectly good web browser at our disposal, and I’m certainly not going to waste that potential. Now it is true that we can only use a limited amount of the GamePad’s functionality from the web browser, it is still better than sitting around idly waiting for others to do the hacking.
And so, I present to you, my solution for GamePad input. I will update this post as I further develop it:
Current Progress: Full input support!
Next Step: Public Release…

Read At WiiUHaX - Follow This Link---> http://bit.ly/Vls5gC Author GregoryRasputin

[DEFAULTDNB]

As I understood it the PIN authentication between WiiU devices and BT dongle on PC has not been discovered yet.

Strange I was reading up on the WiiU Pro pad today and presumed it would be the same for the WiiU game pad too....

http://wiiubrew.org/wiki/Wii_U_Pro_Controller

EDIT: ok so it uses javascript/html:

Local web server, javascript/html page on the GamePad side, javascript/html page on the PC side, both ends connect to a node server through js, npapi plugin on the pc end, node server communicates to the PC js/html page, which communicates with the npapi plugin to emulate mouse activity and key presses