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Breaking Down The Barriers: Design for Accessibility
1.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Breaking down barriers: Design for Accessibility Jan Eric Hellbusch & Martin Stehle © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
2.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 The power of the Web … quot;The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect.quot; (Sir Tim Berners-Lee) © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
3.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Contents 1. A few examples … 2. The range of Web accessibility 3. Quality assurance with a testing scheme (BAFIN) © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
4.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 A few examples … Although there uncountable issues concerning Web accessibility, there are a few major problems in Web 2.0: • Keyboard navigation • Dynamic content and no JavaScript • Compatibility problems with user agents • Images with no alternate text © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
5.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Keyboard navigation At Yahoo! Finance someone forgot to consider keyboard navigation. © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
6.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 And it can go worse … The same page with user color settings. © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
7.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 JavaScript On Flickr we see, that people try, but there usability issues concerning keyboard navigation. © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
8.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Compatibility A simple feature … In Google Suggest keyboard navigation is possible, but there are compatibility problems with screenreaders. © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
9.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Images and alternate text There are limitations to accessibility, or how would you transcribe a Google Map? © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
10.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 The range of Web accessibility • User needs • Legal issues • Workflow 1. Concepts and experiments 2. Technical implementation 3. Visuals and graphical design 4. Web Content © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
11.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 User needs From a users point of view, content providers will have to focus on the following seven aspects to comprehend accessibility: 1. Text orientation 2. Contrast and colours 3. Resizeability 4. Linearisation 5. Device-independence and dynamic content 6. Understandibility 7. Structured contents © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
12.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Legal issues W3C has published recommendations on: • Web Content Accessibility • Authoring Tool Accessibility • User Agent Accessibility The Web Content Accessibility Guidelines are the basis for legislation, including most European countries. © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
13.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Workflow Web accessibility is often a technical issue - at first. To be successful, though, project managers and designers will need to relate to technical ideas such as: • standards compliance • web page prototyping • progressive enhancement © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
14.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Concepts and experiments • accessibility and semantics • cascading style sheets - art in web design • navigation - a site's backbone • text-only? For whom or for what? © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
15.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Technical implementation • layout techniques - writing letters with MS Excel • forms • flexibility, not optimisation • device-independence 1. Input devices 2. Formats (PDF, Flash …) 3. Dynamic content © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
16.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Visuals and graphical design Accessibility refers basically to content, not to design. There are a few checkpoints to be reflected, and art directors should ideally be able to develop their designs with Cascading Style Sheets. The accessibility issues for the graphic designer: • contrast and colour are always subjective • multiple formatting © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
17.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Web Content The next step is the day-to-day work, which is often in different hands. In a way, keeping accessibility up to par in a growing system is the hardest bit, not because of its complexity, but because there might be more people involved. • orientation • images (contrast, alternative text) • technical accessibility (tables, abbreviations …) © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
18.
Web 2.0 expo
– Breaking down barriers: Design for Accessibility 8 Nov 2007 Contact Jan Eric Hellbusch Wittekindstr. 21c D – 44536 Lünen Tel.: +49 (0) 2 31 / 2 25 15 73 © Jan Eric Hellbusch 1967 hellbusch@2bweb.de http://2bweb.de
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