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Accessibility in the 2.0 era

Accessibility in the 2.0 era

The purpose of this talk is to create awareness of the importance of creating apps that are accessible for the majority regardless physical, cognitive, mental, sensory or developmental problems and how to decrease the impact in the experience of our sites by using tools and techniques that help us to make life easier for people who have those disabilities.

Talked presented during MagmaConf 2015 in Manzanillo, Colima

www.magmaconf.com

Fernando Perales

June 05, 2015
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  1. Accessibility
    in the
    2.0 era
    Fernando Perales @FerPeralesM

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  3. Fernando Perales
    Software Engineer @ Crowd Interactive
    FLOSS advocate
    /(.*) metal/ and beer love
    Passionate about web dev and lean startup.
    @FerPeralesM

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  5. #a11y

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  6. Accessibility

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  7. “The design of
    products, devices,
    services, or
    environments for
    people with
    disabilities”
    wikipedia.org/wiki/Accessibility

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  8. https://c2.staticflickr.com/6/5052/5420282382_6a9c6c64b7_b.jpg

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  9. http://www.maspormas.com/sites/default/files/styles/entrevista_full/public/images/large/2014/08/27/orugadeltren_ok.jpg

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  10. http://samar.es/site/themes/default/images/rec-val/espacio-min.jpg

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  11. http://intheroo.com/uploads/2010/09/mexican-pesos.jpg

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  12. Web
    accessibility

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  13. “The inclusive practice
    of removing barriers
    that prevent interaction
    with, or access to
    websites, by people
    with disabilities.”
    wikipedia.org/wiki/Web_accessibility

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  14. WAI

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  15. WAI-WCAG 2.0

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  16. Section 508

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  17. section508.gov

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  18. WAI-ARIA

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  19. WAI-ARIA defines
    roles, states, and
    properties

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  20. Role

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  21. w3.org/TR/wai-
    aria/roles

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  22. role=''

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  23. States and properties

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  24. aria-labelledby=''

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  25. aria-checked=''

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  26. w3.org/TR/
    wai-aria/
    states_and_properties

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  27. Attributes

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  28. Practical
    WAI-ARIA
    Practical
    WAI-ARIA

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  29. w3.org/TR/wai-aria-
    practices

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  30. Design patterns

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  31. Auto Complete
    (widget)

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  32. Description

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  33. A textbox and an
    associated drop-down list
    of choices where the
    choices offered are filtered
    based on the information
    typed into the box.

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  34. Keyboard
    Interaction

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  35. With focus in an empty
    textbox, press Down
    Arrow, Up Arrow,
    Alt+Down Arrow, or Alt+Up
    Arrow to display the entire
    list of choices.

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  41. WAI-ARIA Roles,
    States, and Properties

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  42. The widget has a role of
    combobox, and its parent role is
    input. It has a child with role
    textbox. The property aria-
    autocomplete indicates whether
    user input completion
    suggestions are provided.

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  43. Extra: example

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  44. Dojo autocomplete

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  45. Let's review the remaining
    39 patterns...
    Let's review the remaining
    39 patterns...

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  46. ...NOT!

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  47. Fortunately!

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  48. Semantic HTML

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  49. CSS?

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  50. Considerations

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  51. Kinds of
    Disabilities

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  52. Visual

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  53. Blindness
    Low vision
    Poor eyesight
    Color
    blindness

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  54. What will help

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  55. Logical HTML flow

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  56. Headers

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  57. A way to skip
    navigation or common
    parts among pages

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  58. Skip to content

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  59. Use the right tag for
    each part of the
    document

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  60. Offer text as an
    alternative to images

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  61. Add description to
    graphs, maps and
    diagrams

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  62. https://fluidsurveys.com/wp-content/uploads/2013/09/Charts-PC.png

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  63. Forms

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  64. CAPTCHAs

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  69. High contrast

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  70. Scalable font size

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  71. Audio

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  72. What will help

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  73. Video with good
    captions

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  78. Alternative visual alert

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  79. Physical

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  80. What will
    help

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  81. Fully mouse –
    keyboard navigation

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  82. Avoid items that
    require precise
    movements

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  83. Forms

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  84. Cognitive

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  85. Dyslexia

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  86. What will
    help
    What will
    help

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  87. Fonts

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  88. sans serif > serif

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  89. Keep content short

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  90. Text
    alignment

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  91. Images:
    yay or nay?

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  92. Animations?

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  93. No image
    Background

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  94. ADD and ADHD

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  95. What will
    help

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  96. Avoid timed
    tasks

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  97. Instructions

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  98. No surprises on
    UX

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  99. Tools

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  100. Testing and audit

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  102. dequelabs/axe-core

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  103. Chrome developer
    tools extension
    Karma
    QUnit
    Jasmine
    Mocha
    R-Spec
    Cucumber
    Selenium Java
    Selenium JavaScript
    PhantomJS
    Any testing framework
    that supports
    JavaScript execution

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  104. npm install
    axe-core --save-dev

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  105. "node_modules/axe-<br/>core/axe.min.js"><br/>

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  108. accesslint.com

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  111. diagnosticss.github.io

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  117. cynthiasays.com

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  119. WAVE

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  120. wave.webaim.org

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  123. Colors

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  124. Contrast ratio

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  125. leaverou.github.io/
    contrast-ratio

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  128. Color Contrast
    Checker

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  129. webaim.org/
    resources/
    contrastchecker

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  132. Colour Contrast
    Analyzer

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  134. Paletton

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  135. paletton.com

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  139. Sim Daltonism

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  140. http://a3.mzstatic.com/us/r30/Purple4/v4/cf/0e/3b/cf0e3b46-bf9c-2627-280f-7d4863fb6808/screen800x500.jpeg

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  142. Color oracle

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  143. colororacle.org

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  147. Fonts

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  148. Screen readers

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  149. NVDA
    Screen reader

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  150. nvaccess.org

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  151. Voice Over

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  153. Chromevox

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  154. chromevox.com

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  156. Fangs

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  161. Close captioning

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  162. amara.org
    universalsubtitles.org

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  165. The great
    finale

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  166. http://vignette3.wikia.nocookie.net/uncyclopedia/images/1/10/London2012.png

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  167. http://2.bp.blogspot.com/-cqVRX6P3Q3g/UysNxwxQzEI/AAAAAAAAAPo/F7guy4BaiaM/s1600/sir-tim-berners-lee.jpg

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  169. Thanks!

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