1. Accessibility and Section 508 Compliance in 2009What you need to know. John Whalen, PhD Director, User Experience and Design, e.magination
2. Agenda Thinking 'accessibly’ … why would I care? What are the most common accessibility needs? Evaluating your site's compliance and accessibility Latest best practices for ensuring compliance Standards for interactive applications
3. It’s the Law Section 508 of the Rehabilitation Act: All electronic and information technology used, procured, developed, or maintained by agencies and departments of the U.S. Government must be accessible to people with disabilities. Includes: 120,000 Federal workers 54,000,000 Americans
6. Disabilities truly make the Web difficult… Web users with disabilities are 3 times less likely to succeed than users without disabilities at: Searching for information Making purchases Coyne & Nielsen (2001)
12. Agenda Thinking 'accessibly’ … why would I care? What are the most common accessibility needs? Evaluating your site's compliance and accessibility Latest best practices for ensuring compliance Standards for interactive applications
13. Most Common Accessibility Needs: Visual disabilities blindness low vision color blindness Hearing impairments deafness hard of hearing Aging-related conditions Physical disabilities motor disabilities speech disabilities Cognitive and neurological disabilities dyslexia and dyscalculia attention deficit disorder intellectual disabilities memory impairments
15. Assistive Technologies Braille and refreshable Braille Screen magnifiers Tabbing through structural elements Voice browsers
16. Scenarios and Accessibility Solutions Online shopper with color blindness (user control of style sheets) Reporter with repetitive stress injury (keyboard equivalents for mouse commands; access-key) Online student who is deaf (captioned audio portions of multimedia files) Accountant with blindness (appropriate markup of tables, alternative text, abbreviations, and acronyms; Braille display)
17. Scenarios and Accessibility Solutions Classroom student with dyslexia (use of supplemental graphics; freezing animated graphics) Retiree with aging-related conditions, managing personal finances (magnification; avoiding pop-up windows) Supermarket assistant with cognitive disability (clear and simple language; consistent design) Teenager with deaf-blindness, seeking entertainment (user control of style sheets; accessible multimedia)
18. Agenda Thinking 'accessibly’ … why would I care? What are the most common accessibility needs? Evaluating your site's compliance and accessibility Latest best practices for ensuring compliance Standards for interactive applications
19. Core Principles – WCAG 2.0 Perceivable - Information and user interface components must be presentable to users in ways they can perceiveThis means that users must be able to perceive the information being presented (it can't be invisible to all of their senses) Operable - User interface components and navigation must be operableThis means that users must be able to operate the interface (the interface cannot require interaction that a user cannot perform) Understandable - Information and the operation of user interface must be understandableThis means that users must be able to understand the information as well as the operation of the user interface (the content or operation cannot be beyond their understanding) Robust - Content must be robust enough that it can be interpreted reliably by a wide variety of user agents, including assistive technologies
20. Overall check for your pages Try WebAIM’s WAVE: Web Accessibility Evaluation Tool http://wave.webaim.org/
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22. Use the Web Accessibility Toolbar http://www.paciellogroup.com/resources/wat-ie-about.html Check HTML Resize screen Disable CSS Review image tags Check color Review tables
23. 1. Perceivable: Best contrast / color checkers Contrast Analyzer v2 http://www.paciellogroup.com/resources/contrast-analyser.html tool for determining if foreground & background color combinations provide good color visibility Vischeckhttp://www.vischeck.com/
24. 2. Operable Try your site with no mouse Use Accessibility Toolbar to try site without pictures, without CSS Try site in small sizes, or with magnification turned on Try site using screen reader Accessible CAPTCHA? Try simple math problem.
25. 2. Operable: Screen Readers JAWS: http://www.freedomscientific.com/products/fs/jaws-product-page.asp NVDA - new free screen reader: http://www.nvda-project.org/ Comparison of Screen Readers: http://en.wikipedia.org/wiki/Comparison_of_screen_readers
26. 3. Understandable: Creating Captions on the Web - Multimedia National Center for Accessible Media http://ncam.wgbh.org/webaccess/tools/index.html
27. 3. Understandable – test reading level http://juicystudio.com/services/readability.php#readweb Is your text at the right level? Take a look at the last number – the grade level.
28. Agenda Thinking 'accessibly’ … why would I care? What are the most common accessibility needs? Evaluating your site's compliance and accessibility Latest best practices for ensuring compliance Standards for interactive applications
29. Classics Use “good ‘ole” H1, H2, etc. Good for screen reader, good for SEO. Easier for mobile phone to display page Use CSS to format the tags visually Use CSS Keep text brief Use bulleted format
30. ALT Tags – Context is Crucial Source: http://www.webaim.org/techniques/alttext/
36. Agenda Thinking 'accessibly’ … why would I care? What are the most common accessibility needs? Evaluating your site's compliance and accessibility Latest best practices for ensuring compliance Standards for interactive applications
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38. WAI ARIA Create “live area” that captures changes (without screen refresh) Can set tab index to “-1” to allow focus when needed Allow keyboard control “What am I?”, State, Property [included in IE 8] Example: http://developer.yahoo.com/yui/examples/menu/menuwaiaria.html http://video.yahoo.com/watch/3608798/9955360
39. Accessible Drag and Drop http://devfiles.myopera.com/articles/735/example.html#kbdinstructions
41. Best practices Use XHTML when possible Apply ARIA role attribute when needed Set ARIA states and properties Support full keyboard navigation Make the visual UI match the browser states See also: http://www.alistapart.com/articles/waiaria
42. Agenda Thinking 'accessibly’ … why would I care? What are the most common accessibility needs? Evaluating your site's compliance and accessibility Latest best practices for ensuring compliance Standards for interactive applications
43. How e.magination can help Accessibility Audit Training Coding Consulting: General Tables ARIA
44. Great Accessibility Resources http://www.w3.org/WAI/intro/aria http://www.w3.org/WAI/ http://www.456bereastreet.com/ http://www.paciellogroup.com/blog/ http://juicystudio.com/index.php http://webaim.org/
45. Thank you! John Whalen, PhD Director, User Experience Twitter: @johnwhalen Email: john.whalen@emagination.com LinkedIn: http://www.linkedin.com/in/johnwhalen