Accessible websites removing the barriers
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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."

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Accessible Websites Removing the Barriers

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Accessible websites removing the barriers

Accessible WebsitesRemoving the Barriers

Anne L. Allen

University of Florida, Academic Technology

Center for Instructional Technology and Training


Accessibility

Accessibility

"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 technology2

Assistive Technology

Sip and Puff


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


Accessibility1

Accessibility

  • 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

    • www.ufl.edu

    • www.nytimes.com


Hpr exercise

HPR Exercise

  • Find forecast high temperature for today at www.usatoday.com or www.cnn.com

  • Find what the latest hurricane warnings are at www.weather.com

  • What trains go from Los Angeles to Chicago around 7:00 AM on October 1, 2004 (www.amtrak.com)

  • At www.aa.com find the lowest round trip fare from Los Angeles to Honolulu


Accessibility2

Accessibility

  • 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


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