Accessibility Object Model, Phase 3

This document is a placeholder for the spec for "Virtual Accessibility Nodes", a part of the AOM project. For background, please refer to the Accessibility Object Model Explainer for the background and motivation.

Virtual Accessibility Nodes

Virtual Accessibility Nodes will allow authors to expose "virtual" accessibility nodes, which are not associated directly with any particular DOM node, to assistive technology.

This mechanism is often present in native accessibility APIs, in order to allow authors more granular control over the accessibility of custom-drawn APIs.

On the web, this would allow:

creating an accessible alternative to canvas-based UI which does not rely on fallback or visually-hidden DOM content.
adding semantic information to other types of non-DOM based UI, such as a remote desktop implementation using a <video> element, or another novel form of UI presentation.