Innovative Text Entry for Handheld Devices
Designed for High Accuracy and Stability of Motion

EdgeWrite is a new unistroke text entry method for handheld devices designed
to provide high accuracy and stability of motion for people with motor
impairments. It is also more accurate than Graffiti for people without motor
impairments.  

EdgeWrite uses a unistroke alphabet designed to leverage physical edges for
greater stability in text entry. An EdgeWrite user enters text by trasversing
the edges and diagonals of a square hole imposed over the usual text input
area.  

The EdgeWrite software (patent pending) is now available for download (Free). 

Links:
EdgeWrite webpage
http://www-2.cs.cmu.edu/~edgewrite/

Text with an edge
http://www.post-gazette.com/pg/04334/418563.stm

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Write Steady
From: Technology Review - August 2005 - page 27

For people with diseases like cerebral palsy or Parkinson's, manipulating
handheld computers can be tricky. Even if they manage to hold the
matchstick-thin styluses and use them to form letters and numbers, the
handwriting-recognition software can still translate their shaky strokes into
typos. A new text-entry method called EdgeWrite could ease those
frustrations. Developed by researchers at Carnegie Mellon University, the
system lets the user create each letter or number by following the edges and
diagonals of a square hole in a plastic template clamped over the handheld's
text input area. The edges provide stability, and unlike other input systems,
such as PalmSource's Graffiti, EdgeWrite does not depend on the precise path
of the stylus. Instead, its software recognizes a character by the sequence
of corners hit; it can even be adapted for use with joysticks, touch pads, or
trackballs. EdgeWrite co-inventor Jacob Wobbrock, a PhD candidate in
Carnegie's Human-Computer Interaction Institute, is currently providing the
software and homemade plastic templates for free via his website; he hopes to
find a commercial partner to bring the technology to a wider market. 

From:
http://www.technologyreview.com/articles/05/08/issue/forward_write.asp?p=1

Accurate Text Entry for Handheld Devices
http://www.cs.cmu.edu/~edgewrite/

Text with an edge
http://www.post-gazette.com/pg/04334/418563.stm
