Post on 13-Jan-2016
The Web Experience for People with Disabilities
ADA Trainer Network
Module 7e
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Trainer’s Name
Trainer’s TitlePhone
Email/Website Address
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DisclaimerInformation, materials, and/or technical assistance are intended solely as informal guidance, and are neither a determination of your legal rights or responsibilities under the ADA, nor binding on any agency with enforcement responsibility under the ADA. The Mid-Atlantic ADA Center is authorized by the National Institute on Disability and Rehabilitation Research (NIDRR) to provide information, materials, and technical assistance to individuals and entities that are covered by the ADA. The contents of this document were developed under a grant from the Department of Education, NIDRR grant number H133 A110020. However, those contents do not necessarily represent the policy of the Department of Education, and you should not assume endorsement by the Federal Government.
People who are Blind• Do not use a mouse• May use a screen
reader to listen to the content
• May use a refreshable Braille display
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All content must be accessible from the keyboard only
Images, photos and graphics are unusable
Colors are unusable Navigation may be
difficult / confusing
VideoVideo by AccessIT
Surfing the Web with a Screen Reader
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People with Low Vision• May use screen
magnification software• Only a small portion of
the screen is seen at a time
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Images, photos and graphics may become unusable when enlarged
Navigation may be difficult / confusing if it occurs in multiple locations along the outer edges of the web page
Color Blindness• Approximately 8-10% of
the male population and about 0.5% of the female population experience some form of color deficiency.
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Reds and greens are often indistinguishable
Other colors may be indistinguishable
Color Blindness: Simulation
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Map of Hurricane Isabel (with color)
Color Blindness: Simulation
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Map of Hurricane Isabel (with red/green colorblindness)
Simulated using Vischek (http://www.vischeck.com/vischeck/vischeckURL.php )
Dairy
Beverages
Confections
Meat/Poultry
Seafood
Grains/Cereals
Condiments
Produce
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DairyBeveragesConfectionsMeat/PoultrySeafoodGrains/CerealsCondimentsProduce
People withMobility Impairments
• May use only the keyboard for navigation
• May tire quickly• May not have fine
motor control when using a mouse
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All content must be accessible from the keyboard
Lengthy navigation may cause fatigue
Small or moving links are difficult to select
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Mobility Impairments:Assistive Technology
• Head wand
• Adaptive Keyboard
• Mouth stick
VideoVideo from Web Access Toolkit
Mobility Impairment
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People who are Deaf orHard of Hearing
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Access Considerations
Video clips that include audio are unusable
Audio clips are unusable
Video
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Deafness and Hard of Hearing
People with Cognitive Impairments• May be easily
distracted
• Complex layouts may lead to confusion
• Text-only content may be limiting
Animated images may be distracting
May be difficult to identify important content on a busy page
Use graphics when they support content
Use recognizable key words
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People withPhotosensitive Epilepsy
• Strobe or flickering content may cause seizures
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Access Board, 2001
• Avoid causing the screen to flicker with a frequency greater than 2 Hz and lower than 55 Hz
Mid-Atlantic ADA CenterTransCen, Inc.
401 North Washington Street, Suite 450Rockville, MD 20850
Toll-Free: 800.949.4232 (DC, DE, MD, PA, VA, WV)
Telephone 301-217-0124Fax 301-251-3762TTY 301-217-0124Email ADAinfo@transcen.orgWeb www.ADAinfo.org
The contents of this presentation were developed under a grant from the Department of Education, NIDRR grant number H133 A110020. However, those contents do not necessarily represent the policy of the Department of Education, and you should not assume endorsement by the Federal Government.
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