14 accessibility short
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The document discusses accessibility in web design. It defines accessibility as designing products, devices, and environments to be usable by people with disabilities through both direct and indirect access via assistive technologies. It notes that accessibility benefits all users by working for those with slow connections or small devices. The document outlines how up to 20% of people have disabilities that impact web use, such as visual, hearing, motor and cognitive impairments, and discusses common barriers to accessibility like lack of captioning for deaf users or exclusive keyboard navigation. It provides resources on web accessibility standards and initiatives.
14 accessibility short
- 1. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 1 INTERACTIVE SYSTEMS USABILITY DESIGN Roberto DADDA e Paolo NEGRI
- 2. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 2 Accessibility In a nutshell
- 3. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 3 Accessibility definition • Accessibility in the sense considered here refers to the design of products, devices, services, or environments so as to be usable by people with disabilities. The concept of accessible design and practice of accessible development ensures both "direct access" (i.e. unassisted) and "indirect access" meaning compatibility with a person's assistive technology (for example, computer screen readers). • Not for disabled only, good for slow network connection, small smartphone…
- 4. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 4 Accessibility • The internet is a place of equality. It can give us power and choice at the same level if accessible. • Tim Berners-Lee (founder of WWW) says the power of the web is in its universality: access by everyone regardless of disability is its essential aspect. • Inclusion and supporting the underserved populations. • Federal Section 508 standards – ADA law – Legge stanca
- 5. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 5 Accessibility is… • Accessibility is not… • Text-only pages • Separate accessible versions (except in multimedia) • Boring • Difficult • Accessibility is… • Accessibility is about building web pages that can be navigated and read by everyone, regardless of disability, location, experience or technology.
- 6. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 6
- 7. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 7
- 8. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 8
- 9. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 9 Web Accessibility • Up to 20% of Americans have some kind of disability. • The major kinds that affect web use include: • Visual – blind, low vision, color-blind • Hearing – deafness • Motor – inability to use a mouse, slow response time, limited fine motor • Cognitive – includes learning disabilities, unable to focus
- 10. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 10 Barriers to Accessibility • Visual: Screen readers, read web page content aloud for people who have low or no vision. • Deaf: Need captioning for sound. • Motor: People who don’t have use of their arms or hands sometimes navigate the web via the keyboard, hitting keys with a stick in their mouths. Requires site design that allows for exclusive keyboard navigation…(try getting around a web page using just the keyboard, without using a mouse.)
- 11. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 11 Link to the document
- 12. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 12 Resources on accessibility Web accessibility initiative, W3C WAI theaccessibilityresourcecenter
- 13. www.dadda.it roberto@dadda.it Excellence in usability 1st semester 2019-2020 13 Usability Roberto DADDA roberto@dadda.it www.dadda.it Skype, Facebook e Twitter robertodadda