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Multi Touch Screen ready to see the light of day?

0 comments | Sunday, November 05, 2006

Come on.... We like IT !

At the beginning of 2006, Jeff Han from TED conference 2006 held in Monterey. He displayed an absolute revolution in Human Computer interaction. There are some really interesting project alongside this one at his webpage.

For a long time the only input devices for computer were the keyboard and the mouse. In 1971, Dr. Samuel C. Hurst invented touch screen. Touch screen is “display overlay which is typically either pressure-sensitive, electrically-sensitive”.

They are expensive and their price increases drastically with size. But now, Jefferson Y. Han from Courant Institute of Mathematical Sciences, NYU demonstrated the new approach to how users approach the computer. Technology is not new and is nothing drastic but the application of available technology is stunning.


It is a “simple, inexpensive, and scalable technique for enabling high-resolution multi-touch sensing on rear-projected interactive surfaces based on frustrated total internal reflection".

This basically means that the technology is independent from the size of the display and relatively inexpensive. The most expensive part is the projector. But not necessary. LumenLab has offered to the general public (or non DIY community) a cheap but interesting projector for less then $500.


What it means is that this whole project almost has a a DIY potential. What you need is a projector, slightly better "web cam", a plate made of Plexiglas or acrylic. Plexiglas would be a bad choice but maybe it could work. Trough the sides light is inserter at an angle where no light passes to the outside of the plane, also called the Total Internal Reflection.

When a finger is pressed to the plate it lights up. Video from web cam is afterward processed by a computer. Now, the only tricky part is how to program multi input. Imagine having 10 mice's moving around your windows. Windows wouldn't know what to do with all of them clicking at the same time.



Good, old Star Trek (actual shot, not taken from Star Trek).
Now I know where they got the idea from.

Digg!

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