Adaptative equipment for creating accesible web pages.

We presented several tips for creating accessible web pages following the recommendations that Erica B. Lilly give us. As Erica said: “Understanding how inaccessible Web pages create barriers to the optimal use of adaptative equipment in rendering Web page information gives developers a context in which to include accessibility elements[…]”

  1. Indivuduals with visual disabilities. People with visual disabilities may experience low vision, functional vision, color blindness, or blindness and have problems with seeing computer screens and using Keyboards. Without a textual equivalent, web pages that make extensive use of graphics become inaccessible. Besides, complex scientific and math notation, video clips without audio, and navigation tables, frames and form are other problems.
    1. Examples of Adaptative technology include:
      1. Screen magnifiers (which increase the size of the text or images on a computer screen).
      2. Speech recognition software used with a microphone or another speech input device (which enables the user to speak commands that are then recognized).
      3. Screen readers and voice browsers (software that reads information on a computer back to the user).
      4. Screen readers and speech synthesizing (software that respond to text and not images).
  2. Individuals with physical or motor disabilities. Persons with these disabilities requiring an adequate space around equipment. They may also have restrictive use or no use of their hands and have paralysis, missing limbs, limited body movement and control; they may often be unable to use standart computer input and output devices. Web designers may reduce barriers to access by implementing a simple design that is easily viewed and incorporating clear onscreen and keyboard navigation.
    1. Examples of Adaptative technology include:
      1. Mouth sticks.
      2. Head pointers.
      3. Infrared devices.
  3. Individuals with hearing disabilities. May be hard of hearing of deaf and often have little difficulty using standard computer equipment. Web authors should add textual equivalents where needed to make content accessible.
    1. Examples of Adaptative technology include:
      1. A captioning system and a player or plug-in (e.g. RealPlayer) to provide the captions.
  4. Individuals with learning disabilities. May have visual perceptions problems or aural processing difficulties. Using the same access strategies for these groups often assists persons with learning disabilities.
    1. Examples of Adaptative technology include:
      1. All the previous technologies.

Are you using any of these technologies at your library? What is the most frequent? How are they use?


References: Lilly, Erica B. (2000). Creating Accesible Web Sites: an introduction. The Electronic Library, vol.19, num.,6, 2001, pp.397-404.


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