Accessibility
- Accessibility is intented to ensure that our work will be usable and available to the largest possible number of readers, visitors and customers;
- For users who:
- May not be able to see, hear, move, or process some types of information easily or at all;
- Have a voice browser;
- Have difficulty reading or processing information due to cognitive disabilities;
- May not have or be able to use (or for some reason do not have) a keyboard or mouse;
- Have a text-only screen, or an older computer;
- May be using a device such as a cell phone or a PDA;
- Users should be able to:
-
Read and react to text and images;
-
Type on a standard keyboard;
-
Point & click on text, images & widgets;
-
Hear and react to sounds played;
-
Disabilities
- Visual impairments & print disabilities
-
Blind and deaf-blind people use screen reading software;
-
Partially sighted people may use font/contrast settings or screen magnification software;
-
Dyslexic [?] people use text to speech software combined with word highlighting;
- Physical disabilities
-
Quadriplegics [?] use the keyboard with a mouth stick, on screen keybords, domicile software, speech input software and head/eye tracking mice;
-
One handed typists use sticky-key software;
- People with ALS [?] or cerebral palsy may use filter keys, word prediction software and single switch devices;
- Other disabilities
-
Hearing impaired people need software that do not rely on sound for cues;
-
Color blind people need software that does not rely on color alone;
- Persons with cognitive and learning disbilities need software with simple layout and messages;
- Persons with epilepsy [?] need software with no flashing or blinking;
-
W3C launched
WAI
with the task to create guidelines (
WCAG 2.0
) for making web content accesible to people with disabilities;
-
Section 508 is an american law which is intented to end discrimination against people with disabilities ("equal or equivalent access to everyone");
- Example:
WAI Site
Normal View
Without Images
Without Style
Lynx
Screen Readers
- Opera Accesibility
-
Google Accessible Search - promotes results that are accessible;
-
Lynx Viewer
-
Opera Mini Simulator
Know your visitors
-
General Solution: Google Analitics
- The most popular browser worldwide is IE 6.0. Tech-related web-sites have more Firefox users.
- The most used screen resolution worldwide is 1024×768
- The most popular OS is Windows XP