Explanation

A tactile sufficient access mode indicates that a publication can be read, in whole or in part, if a user is able to perceive content through touch. It is expressed in metadata using the tactile value.

A single tactile sufficient access mode is most commonly associated with braille publications, such as can be produced using the eBraille format (an specialization of EPUB 3 for braille). EPUB publications can also entirely consist of braille content although this is not common.

A tactile sufficient access mode is sometimes found paired with other sufficient access modes. For example, an audiobook for blind users might also include tactile graphics, in which case it would have a sufficient access mode set of auditory and tactile.

Examples

Example 1 — EPUB 3
<meta property="schema:accessModeSufficient">tactile</meta>
Example 2 — EPUB 2
<meta name="schema:accessModeSufficient" content="tactile"/>
"accessModeSufficient": [
   {
      "type": "ItemList",
      "itemListElement": ["auditory", "tactile"],
      "description": "Audio and tactile graphics"
   }
]

ONIX Mapping

ONIX currently does not include a means of expressing sufficient access modes.

Related Links