Jeff Han shows off a cheap, scalable multi touch and pressure sensitive computer screen interface that may spell the end of point and click.

So it's actually a multi dimensional user interface.

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Now, multi touch sensing isn't completely new.

Now what's great about a multi touch sensor is that, you know, I could be doing this with as many fingers here, but of course multi touch also inherently means multi user.

That's multi touch, controlling a device by touching its display.

KF Yes. And yet, here is multi touch in action.

This is Jeff Han, and, I mean, that's multi touch.

So it's not multi touch as a whole that's patented.

Another was a computer that ran the same touch screen interface, ran exactly the same dialogues.

Steve Jobs And we have invented a new technology called multi touch.

Here is Steve Jobs introducing multi touch and making a rather foreboding joke.

So, multi touch interaction research is a very active field right now in HCI.

Two of the known applications for this material include interior design and multi touch systems.

So we've implemented all the gestures you can do on the table, and you can think of it as an enormous touch interface.

Another nice thing is that a camera can see multiple dots, so this is actually a multi touch, interactive whiteboard system as well.

So you've got an interface that has no interface.

Jeff Han Multi touch sensing isn't anything isn't completely new. I mean, people like Bill Buxton have been playing around with it in the '80s.

The interface

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Now, this is a rear projected drafting table. It's about 36 inches wide and it's equipped with a multi touch sensor. Now, normal touch sensors that you see, like on a kiosk or interactive whiteboards, can only register one point of contact at a time.

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