accessible websites removing the barriers
Skip this Video
Download Presentation
Accessible Websites Removing the Barriers

Loading in 2 Seconds...

play fullscreen
1 / 27

Accessible Websites Removing the Barriers - PowerPoint PPT Presentation

  • Uploaded on

Accessible Websites Removing the Barriers. Anne L. Allen University of Florida, Academic Technology Center for Instructional Technology and Training. Accessibility. "The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect."

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

PowerPoint Slideshow about 'Accessible Websites Removing the Barriers' - knoton

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
accessible websites removing the barriers

Accessible WebsitesRemoving the Barriers

Anne L. Allen

University of Florida, Academic Technology

Center for Instructional Technology and Training


"The power of the Web is in its universality.

Access by everyone regardless of disability is an essential aspect."

Tim Berners-Lee,

W3C Director and inventor of the World Wide Web

what is accessibility on the web
What is accessibility on the web?
  • Web sites are accessible when individuals with disabilities can access and use them as effectively as people who do not have disabilities.
who me
Who, me?
  • I don’t have any students with disabilities.
  • This seems like a lot of trouble for a small number of people who might possibly use the material.
what do these have in common
What do these have in common?
  • Carbon paper
  • Typewriter
  • Curb cuts
who benefits
Who benefits?
  • Carbon paper
    • First developed for blind and partially sighted clerks who could not tell when their quill pens ran out of ink.
who benefits1
Who benefits?
  • Typewriter
    • The first working typewriter was built by Pellegrino Turri in 1808 for his blind friend Countess Carolina Fantoni da Fivizzono so she could write legible love letters.
who benefits2
Who benefits?

Curb Cuts

what kinds of disabilities
What kinds of disabilities?
  • Blindness
  • Other visual impairments
  • Learning disabilities
  • Mobility impairments
  • Photosensitive seizure disorders
  • Hearing impairments
what kinds of difficulties
What Kinds of Difficulties?
  • Blindness
    • Inability to access graphical information
  • Solution
    • Provide a text equivalent for every non-text element
what kinds of difficulties1
What Kinds of Difficulties?
  • Visual impairments
    • Difficulty reading tables and charts
    • Inability to make sense of pages when magnified
  • Solution
    • Design sites using relative rather than absolute values for width and height of rows and columns and images
what kinds of difficulties2
What Kinds of Difficulties?
  • Learning disabilities
    • May have difficulty understanding cluttered websites and layout changes from screen to screen
  • Solution
    • Follow usability and accessibility guidelines when creating sites – better design for all
what kinds of difficulties3
What Kinds of Difficulties?
  • Mobility impairments
    • May not be able to respond that call for a timed response (such as quizzes)
  • Solution
    • Allow users to adjust the timing of responses
what kinds of difficulties4
What Kinds of Difficulties?
  • Photosensitive seizure disorders
    • Flickering images and text may trigger seizures
  • Solution
    • Avoid the use of flickering elements
what kinds of difficulties5
What Kinds of Difficulties?
  • Hearing impairments
    • Unable to hear multimedia presentations using sound, such as recorded lectures or videos
  • Solution
    • Multimedia presentations must be captioned or provided in alternate formats
assistive technology
Assistive Technology
  • How do people with disabilities use the Web?
  • How do you use the Web without a mouse?
assistive technology1
Assistive Technology

How does Quick Glance work?

Camera mounted on computer monitor is focused on user's eye.

It determines where user is looking--

--the gaze point cursor is placed at the gaze point.

"Mouse clicks" are done with a slow eye blink, an eye dwell, or a hardware switch.

assistive technology3
Foot Mouse

one pedal controls cursor movement, the other for mouse clicks

Assistive Technology

Add-on Touch Screen

assistive technology4
Assistive Technology
  • Alternative Keyboards
assistive technology5
Assistive Technology
  • On Screen Keyboards
assistive technology6
Assistive Technology

Roller Switches

Power Braille

  • What are the challenges of using the web without seeing the page?
  • How does a screen reader read images? Audio files? Video files?
web page reader
Web Page Reader
  • Home Page Reader
hpr exercise
HPR Exercise
  • Find forecast high temperature for today at or
  • Find what the latest hurricane warnings are at
  • What trains go from Los Angeles to Chicago around 7:00 AM on October 1, 2004 (
  • At find the lowest round trip fare from Los Angeles to Honolulu
  • Could you complete your task?
  • If not, what were the barriers?
accessibility is not in the web page
Accessibility is not “in” the Web page
  • Accessibility is experiential
    • User is able to use data, information, and services as effectively as someone without a disability
  • Accessibility is environmental
    • It depends on the interaction of the document with user agents, assistive technologies--and people