Accessibility Metadata Madeleine Rothberg National Center for Accessible

Accessibility Metadata Madeleine Rothberg National Center for Accessible Media at WGBH December 12, 2016

So many standards! § § Web standards from W 3 C: WCAG, HTML, ARIA W 3 C DPUB Note and ARIA DPUB roles EPUB for Education EPUB Accessibility: Conformance and Discovery Requirements for EPUB Publications § Schema. org and ONIX metadata © 2016 WGBH 2

What is a digital book? 3 Words, images, widgets. . . Arranged with structure

Standards guide accessibility in every layer Words etc. in accessible HTML with ARIA Arranged with structure using ARIA DPUB roles Wrapped in a book format using EPUB a 11 y standard Offered in an online catalog using Schema. org and ONIX metadata © 2016 WGBH 4

Accessibility Metadata § ONIX • Extensive accessibility features list • Code List 196 § Schema. org and a 11 ymetadata. org § Work in progress: harmonize ONIX and Schema. org accessibility metadata © 2016 WGBH 5

Schema. org Accessibility Metadata § Describe accessible resources so users can find the kind of materials that are most useful to them: a one-fits-one approach • Also warn about hazards in resources (i. e. flashing) § Useful for publishers, libraries, anyone offering content on the web • Even if the content itself is not digital! © 2016 WGBH 6

Schema. org Accessibility Metadata Current properties: § accessibility features, hazards, control, API Pending: * § access mode, access mode sufficient, accessibility summary, braille details *Any day now! © 2016 WGBH 7

Demos: Google Search Google search tools can find captioned video using You. Tube internal

Demos: Google Custom Search § Custom searches with Google Custom Search Engine using Schema.

Demos: Teachers’ Domain Search results for a user who is Deaf and has difficulty

Definitions accessibility. Feature Content features of the resource, such as accessible media, alternatives and supported enhancements for accessibility. Usage: Between 100 and 1000 domains Vocabulary: alternative. Text, annotations, audio. Description, bookmarks, braille, captions, Chem. ML, described. Math, display. Transformability, high. Contrast. Audio, high. Contrast. Display, index, large. Print, latex, long. Description, Math. ML, none, print. Page. Numbers, reading. Order, ruby. Annotations, sign. Language, structural. Navigation, synchronized. Audio. Text, table. Of. Contents, tagged. PDF, tactile. Graphic, tactile. Object, timing. Control, transcript, tts. Markup, unlocked © 2016 WGBH 11

Definitions accessibility. Hazard A characteristic of the described resource that is physiologically dangerous to some users. Related to WCAG 2. 0 guideline 2. 3. Usage: Between 10 and 100 domains Vocabulary: § flashing § no. Flashing. Hazard § motion. Simulation § no. Motion. Simulation. Hazard § sound § no. Sound. Hazard § unknown © 2016 WGBH 12

Definitions accessibility. Control Identifies input methods that are sufficient to fully control the described resource. Usage: Between 10 and 100 domains Vocabulary: § full. Keyboard. Control § full. Mouse. Control § full. Switch. Control § full. Touch. Control § full. Video. Control § full. Voice. Control © 2016 WGBH 13

Definitions accessibility. API Indicates that the resource is compatible with the referenced accessibility API. Usage: Between 10 and 100 domains Vocabulary: § § § Android. Accessibility ARIA ATK AT-SPI Blackberry. Accessibility i. Accessible 2 i. OSAccessibility Java. Accessibility Mac. OSXAccessibility MSAA UIAutomation © 2016 WGBH 14

Definitions access. Mode (pending) The human sensory perceptual system or cognitive faculty through which a person may process or perceive information. Vocabulary: auditory, tactile, textual, visual, color. Dependent, chart. On. Visual, chem. On. Visual, diagram. On. Visual, math. On. Visual, music. On. Visual, text. On. Visual © 2016 WGBH 15

Definitions access. Mode. Sufficient (pending) A list of single or combined access. Modes that are sufficient to understand all the intellectual content of a resource. Vocabulary: § auditory § tactile § textual § visual © 2016 WGBH 16

Definitions accessibility. Summary (pending) A human-readable summary of specific accessibility features or deficiencies, consistent with the other accessibility metadata but expressing subtleties such as "short descriptions are present but long descriptions will be needed for non-visual users" or "short descriptions are present and no long descriptions are needed. " © 2016 WGBH 17

Accessibility Metadata in HTML © 2016 WGBH 18

Impact Now: § Use it in specialized libraries to improve search results for your members § Use it for general audience materials to list access modes and any naturally occurring or intentional accessibility features § Be accurate! Incorrect metadata won’t help the cause § Request metadata from publishers if you are a purchaser In the future: § Increasing the number of domains using the properties will increase chance of mainstream search engine use © 2016 WGBH 19

Resources for Accessibility Metadata: Specification, examples, crosswalk, and more: http: //www. a 11 ymetadata. org/ Vocabularies: https: //www. w 3. org/wiki/Web. Schemas/Accessibility Schema. org: https: //schema. org/ Schema. org Metadata Integration Guide for EPUB 3: Advice on integrating schema. org metadata in an EPUB® package document By Matt Garrish, Michael Jay, and Madeleine Rothberg http: //www. idpf. org/epub/guides/schema-org-integration/ © 2016 WGBH 20