Now we're getting a demo of this working on a Windows 8 machine. It just scanned a face to open it up.

In order for face recognition to really work, I want to never know it's working. Staring at the screen awkwardly for a few seconds isn't natural.

Bhowmik is demoing the little gesture peripheral it worked on with Creative to add these kind of features to computers, technology that will be built into things like tablets and notebooks in the future. For now this is something people are going to have to buy, and will be released later this year.

The camera can pick up your fingers, all ten of them. Bhowmik doing a neat demo catching some coins pouring out of a metal snake's mouth. The whole tech took about 90 days to create.

And now for a more exciting demo -- Valve's Portal 2 . Bhowmik manipulating a cube with the Portal gun using his hand. The backend technology is from Sixense.

As awkward as voice and gestures can be, what if we all agree to endure it if it means we get a holodeck 20 years from now?

One more demo here. This time Bhowmik's showing off eye tracking with a software version of Where's Waldo. The fame just tracks where you're looking to find him. Bhowmik spots him and the page turns to another illustration.

The Waldo demo is pretty impressive. I can see people using that.

And that's it folks.

Thanks for joining us, hope you enjoyed it. As a reminder, you can catch a full recap of what was announced with the links above.