Presentation on theme: "Accessibility Update Elizabeth J. Pyatt, Ph.D. Information Technology Services."— Presentation transcript:
Accessibility Update Elizabeth J. Pyatt, Ph.D. (email@example.com) Information Technology Services
Outline Current Situation Training Opportunities Issues for multiple audiences
What is accessibility? Ensuring access to online materials for disabled Visual impairments Hearing impairments Mobility impairments (hands) Cognitive impairments (largest population) Audience students/staff/instructors/visitors
Goal: Universal Design “Universal Design” Designing for the largest audience possible regardless of disability or ability – UMN Duluth Web Glossary “Universal Access” “…regardless of disability, location, device or speed of connection to the Internet”
Accessibility at Penn State National Federation of the Blind Problems identified with ANGEL, eLion, Elecrtonic Reserves, Clickers Captions Required (AD 25) Marketing Videos (mandated Feb 1) Official Websites Accessible (AD 54) Course Materials?
Notable Guidelines WCAG W3C Consortium Version 1.0 and 2.0 2.0 most recent and includes Web 2.0 sites 3 Levels (level 1 = minimal) Section 508 U.S. Government – under revision to more closely match WCAG ARIA – For Web 2.0
Audience vs. “Guidelines” Different types of disabilities…but needs remain the same across tech A video is a video no matter the technology and will need captions Accessibility needs to evolve with new tech There’s no “spec” for Twitter, but we can guess potential problems Accessibility benefits everyone Everyone will be temporarily disabled
Severe Visual Impairment Requires a screen reader to read Web content aloud Multimedia, images need to be described Not all descriptions need to be hidden Program elements/menus/form fields need to identify themselves properly Hidden Audience Text-based mobile device, missing plugin, images disabled, or broken image link
ALT Tagger in ANGEL Enter information “Alternative Text” field when uploading images
Testing ALT Tags Disable Images Manually in browser preferences Firefox Accessibility Extension (adds accessibility toolbar) https://addons.mozilla.org/en- US/firefox/addon/5809 https://addons.mozilla.org/en- US/firefox/addon/5809 WAVE Testing Web Site (shows ALT tags) http://wave.webaim.org/ http://wave.webaim.org/
Online Forms/Menus Forms must identify field to screen reader If HTML, then use LABEL tag to match field with label Menus must announce options
Hearing Impaired You cannot hear content Captions, captions, captions (or transcript) Some users more fluent in sign language Hidden Users Forgot headphone in lab Audio cuts out Can’t find one of 5 volume controls Poor audio quality (even for normal hearing)
Captions Reveal Information Caption shows how to spell Cole Camplese’s name.
About Captions About ½ students in Phil 12 used caption option in videos caption option in videos External text files can be created for Quicktime Flash Video Video & Audio Podcast on iTunes YouTube Streamed Video iTunes
Captioning Tools Movie Captioner (Mac Only) http://www.synchrimedia.com/ http://www.synchrimedia.com/ Installed in the CLC Computing Labs Windows Solutions MAGPie (Free from http://ncam.wgbh.org/webaccess/magpie/) http://ncam.wgbh.org/webaccess/magpie/ Others for Windows and Mac
Find Me Some Captions! The hardest part is the transcript. Can you: Write a script first Order a transcript/script from a TV show Buy the DVD (which often has English subtitles) Pay for a transcriber? NOT a high end skill Speech recognition an option, but proof text. Live captioning does require a specialist
Other Tools Speech Recognition (Imperfect) Requires training for each speaker (5 min) Relies on audio quality Good for frequent podcasters/lecture capture Captions should be checked manually Commercial Providers $75-$150 per hour of video Many based on speech recognition instead of typists
Low Vision Users May zoom browser 200% or more Good color contrast (light vs dark) Fonts should be extra legible on Web – usually serif Avoid 6-8 point text. 12 pt should be minimum for main content. 9/10 OK for small text. Text zooms better than images – Use CSS instead of images for decorative text Hidden Audience iPhone users Older users
At 300% Zoom Which part of content is an image? Equation. This is an image because it was best option available (and yes, it has an ALT tag).
A Little Hard on the Eyes Tiny Text (7/8 pt) Light gray field labels Can you see the text? An entire page in a cursive font?
Check Color Contrast Default interface should have good contrast. ANGEL good…Other tools? Tests http://juicystudio.com/services/luminosityco ntrastratio.php OR http://juicystudio.com/services/luminosityco ntrastratio.php http://webaim.org/resources/contrastchecke r/ http://webaim.org/resources/contrastchecke r/ AAA: All Good (Full Speed Ahead) AA: Large Text Only (18 pix/14 pix bold) Fail: Avoid (There is no “A”)
Two Blue Color Schemes Minor adjustments can change a borderline scheme to a good one and preserve designer intent AA Level Only Pale blue #CDF link text = #058 AAA Level Pale blue #F3F6FF link text = #049 (bold)
Motion Impaired Keyboard always easier than mouse Enable keyboard tabbing on forms Develop text-based alternative (esp. drop down menus) Keyboard shortcuts BIG click targets & avoid disappearing controls Hidden Audience Carpal tunnel, broken wrist, essential tremor, New to mouse, iPhone, track pad… Screen reader users prefer keyboard as well
Controls for Animation Keyboard: S = Start/Slow, F = Fast, space = pause. Let’s view animationLet’s view animation
Speaking of Flash Have you Stopped animations/music by default and given play controls Checked color contrast? Used legible fonts? Checked usability? Made form labels/icons announce themselves? Including the play/pause buttons? Described animation/images for screen readers? Allowed for captioned videos? Recommendation: Don’t build 100% Flash navigation site
Beware Drop Down Menus Problems Hard for motion impaired users, especially if they disappear Hard for screen reader users unless properly coded (usually via CSS) Hard for cognitively impaired users…unless entire site menu displayed Solution Text-based alternate (e.g. Site Map, clickable main menus)
Cognitive Disabilities Interface should be simple and consistent Use same language throughout site/tool Use language audience will understand Restrict icons to the basics (e.g. arrow icon) or label all icons Provide “Global View” (all options at once) Don’t hide information too quickly Let user start/stop animation & audio
Hidden Audience Everyone appreciates usability Customers often have “simpler” mental models than developers Use “Whale” instead of “Cetacean” Use “Impressionism” instead of “19 th Century French” Does everyone know what a “browser” is? Avoid Icon Trap What are these icons? Icons + labels better
Color Deficient users Primarily Red/Green (10% men) Design so information viewable in black and white (or grayscale) Underline your text links Supplement color coding with shape Red X and Green √ Hidden Audience People with a black and white printer ANGEL Quiz Scores X & √
Red/Blue for Warnings Use a shade of blue instead of green for warnings. Blue tends to preserve itself the best.
Testing Color Deficiency Photoshop CS4 Protonopia & Deuteronopia filters Under View » Proof Setup menu View page in grayscale (change monitor settings) Online Color Blindness Testers http://www.iamcal.com/toys/colors/ http://www.iamcal.com/toys/colors/ http://www.vischeck.com/vischeck/vischeckU RL.php http://www.vischeck.com/vischeck/vischeckU RL.php
Testing New Tech Can the screen reader access information? Uploads Are captions supported for audio/video uploads? Are ALT tags supported for image uploads? Default format Legible text? Good color contrast? Proper Headers? WYSIWYG editor generating accessible HTML?