MULTITOUCH
Technology
October 2009
Multitouch
MULTITOUCH
Technology report
Summer 2008
Introduction
Multi-touch (or multitouch) denotes a set of interaction techniques which allow computer
or mobile users to control graphical user interface with more than one finger at either application or system level. The term Multi-Touch is a trademark of Apple, Inc.
Multi-touch consists of a touch screen (screen, overlay, table, wall, etc.) or touchpad, as well
as software that recognizes multiple simultaneous touch points, as opposed to the single
touchscreen (e.g. computer touchpad, ATM), which recognizes only one touch point. This
effect is achieved through a variety of means, including: heat, finger pressure, high capture
rate cameras, infrared light, optic capture, tuned electromagnetic induction, ultrasonic receivers, transducer microphones, laser rangefinders, and shadow capture.
Many products using multi-touch interfaces exist and are being developed. Multi-touch is
used on portable devices including the Apple iPhone, HTC Hero, Microsoft's Zune HD,
Samsung Memory, and the Palm Pre, as well as desktop products such as the Microsoft Surface and the DELL Latitude XT2.
History
Multi-touch technology dates back to 1982, when Nimish Mehta at the University of Toronto developed the first finger pressure multi-touch display.[3]
In 1983, Bell Labs at Murray Hill published a comprehensive discussion of touch-screen
based interfaces. [4] In 1984 Bell Labs engineered a touch screen that could change images
with more than one hand. The group at the University of Toronto stopped working on
hardware and moved on to software and interfaces, expecting that they would have access to
the Bell Labs work.[3]
A breakthrough occurred in 1991, when Pierre Wellner published a paper on his multi-touch
“Digital Desk”, which supported multi-finger and pinching motions. [5][6]
Various companies expanded upon these discoveries in the beginning of the twenty-first
century. Mainstream exposure to multi-touch technology occurred in the year 2007, when
Multitouch
Apple unveiled the iPhone and Microsoft debuted surface computing. The iPhone in particular has spawned a wave of interest in multi-touch computing, since it permits greatly increased user interaction on a small scale. More robust and customizable multi-touch and
gesture-based solutions are beginning to become available, among them TrueTouch, created
by Cypress Semiconductor. The following is a compilation of notable uses of multi-touch
technology in recent years.
The use of multi-touch technology is expected to rapidly become common place. For example, touch screen telephones are expected to increase from 200,000 shipped in 2006, to 21
million in 2012.
Multi-touch displays
Perceptive Pixel
Microso" Surface
Multitouch
MultiTouch LCD Ce$
Different Multitouch Display
Related Links
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1. http://en.wikipedia.org/wiki/Multi-touch
2. http://multitouch.fi/
3. www.nuigroup.com/touchlib/ (Windows only)
4. www.ccv.nuigroup.com/ (cross-platform)
Way to use
Today,multitouch is widely used in Mobile area, computer, advertisement table....
I think it can be widely used in education for both normal kids and disability kids since the
feedback is very easy to understand.
Multitouch