child comunicates via wheel.

http://www.youtube.com/watch?v=l7eMoA3cr8E


------------------------------------------------------------------------

Include People with Disabilities in the Design Process
It is in the design and evaluation of operating systems and desktop environments that designing for people with disabilities is most critical. Without the appropriate system software infrastructure, no amount of effort on the part of application developers can improve the accessibility of applications. As we discuss later, large gains in the accessibility of computer systems ultimately depend on improvements in software infrastructure.

On the other hand, there are many ways to improve the accessibility of applications within the constraints of current systems. Perhaps the most obvious way to enhance accessibility is to consider the needs of people with disabilities in all stages of the design process, including requirements gathering, task analyses, usability tests, and design guidelines. Other strategies include evaluating the usability of software in conjunction with popular assistive technologies, and testing under simulated disability conditions (e.g., unplug the mouse, turn off the sound, and use a screen reader with the monitor turned off). Note that none of these approaches are substitutes for testing with users. Simulation does not realistically represent the rich contexts and needs of users with disabilities. On the other hand, it is better than not testing accessibility at all.

Usability testing with even one user from each of the general disability categories we discuss in this chapter can have significant benefits for all users, not only those with disabilities. Depending on their disability, users can be especially affected by usability defects. Low vision users are sensitive to font and color conflicts, as well as problems with layout and context. Blind users are affected by poor interface flow, tab order, layout, and terminology. Users with physical disabilities affecting movement can be sensitive to tasks that require an excessive number of steps or wide range of movement. Usability testing with these users can uncover usability defects that are important in the larger population.

------------------------------------------------------------------------
videos:
AssistiveWare’s Proloquo, KeyStrokes and SwitchXS software

imac helping individuals with cerebral palsy.
http://www.youtube.com/watch?v=capg1FmXYUI

proloquo
http://www.assistiveware.com/proloquo.php

http://www.youtube.com/watch?v=aVLJ9YFM030

switchaccess
http://www.assistiveware.com/switchaccess.php


http://www.assistiveware.com/keystrokes.php

http://www.assistiveware.com/visiovoice.php

one thumb to rule them all.
http://www.youtube.com/watch?v=2BhHwk9qSvI

we can because we think we can.
http://www.youtube.com/watch?v=IjfwCpcD3mk&feature=related

a pivotal role in household.
http://www.youtube.com/watch?v=ENkjkIypXq4&feature=related

keyboard controlled assistive music browser.
http://www.youtube.com/watch?v=DT_mI9Kgtvg



http://www.assist-it.org.uk/assets/content/switch_access.htm


-------------------------------------------------------------------------
accessibility on people with disabilities. videos.

http://www.conetrees.com/2009/02/linkblog/understanding-accessibility-videos-of-users-using-assistive-technology/