Transcript The Web Experience for People with Disabilities - Mid

ADA Trainer Network
Module 7e
The Web Experience for People
with Disabilities
Trainer’s Name
Trainer’s Title
Phone
Email/Website Address
1
Disclaimer
Information, 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.
2
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
 All content must be
accessible from the
keyboard only
 Images, photos and
graphics are unusable
 Colors are unusable
 Navigation may be
difficult / confusing
3
Video
Video by AccessIT
Surfing the Web with a Screen Reader
4
People with Low Vision
• May use screen
magnification software
• Only a small portion of
the screen is seen at a
time
 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
5
Color Blindness
• Approximately 8-10% of  Reds and greens are
often indistinguishable
the male population
and about 0.5% of the
 Other colors may be
female population
indistinguishable
experience some form
of color deficiency.
7
Color Blindness: Simulation
Map of Hurricane Isabel (with color)
8
Color Blindness: Simulation
Map of Hurricane Isabel (with red/green colorblindness)
Simulated using Vischek (http://www.vischeck.com/vischeck/vischeckURL.php )
9
Dairy
Beverages
Confections
Meat/Poultry
Seafood
Grains/Cereals
Condiments
Produce
Dairy
Beverages
Confections
Meat/Poultry
Seafood
Grains/Cereals
Condiments
Produce
10
People with
Mobility Impairments
• May use only the
keyboard for navigation
• May tire quickly
• May not have fine
motor control when
using a mouse
11
 All content must be
accessible from the
keyboard
 Lengthy navigation
may cause fatigue
 Small or moving links
are difficult to select
Mobility Impairments:
Assistive Technology
• Head wand
• Mouth stick
• Adaptive Keyboard
12
Video
Video from Web Access Toolkit
Mobility Impairment
13
People who are Deaf or
Hard of Hearing
Access Considerations
Video clips that include
audio are unusable
Audio clips are
unusable
14
Video
Deafness and Hard of Hearing
15
People with Cognitive Impairments
• May be easily
distracted
 Animated images may be
distracting
• Complex layouts
may lead to
confusion
 May be difficult to
identify important
content on a busy page
• Text-only content
may be limiting
 Use graphics when they
support content
 Use recognizable key
words
16
People with
Photosensitive Epilepsy
• Avoid causing the
screen to flicker with
a frequency greater
than 2 Hz and lower
than 55 Hz
• Strobe or flickering
content may cause
seizures
Access Board, 2001
21
Mid-Atlantic ADA Center
TransCen, Inc.
401 North Washington Street, Suite 450
Rockville, MD 20850
Toll-Free: 800.949.4232 (DC, DE, MD, PA, VA, WV)
Telephone
Fax
TTY
Email
Web
301-217-0124
301-251-3762
301-217-0124
[email protected]
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.
22