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Overlay Capabilities: Major Update

We’re pleased to announce a major update of our draft report on Overlay Capabilities.

Where previously these were simply a list of over 46 and prospective applications of overlays in support of accessibility, they’re now organized under two primary categories with several subcategories under each primary section. The primary categories are:

  • Capabilities the end user can (or should) be able to control fully.
  • Capabilities which are controlled by the content provider even though they can profoundly affect the accessibility experience.

As before we continue to add capabilities based on your feedback and discussion during our weekly teleconference meetings. And, as before we continue editing our analysis of each overlay capability from three viewpoints:

  • Implications of locating the capability in the content provider’s web source;
  • Trade-offs to be considered between locating the capability in source content vs. at the edge;
  • Benefits that can be realized by locating the capability at the edge.

Our last teleconference discussed adding graphical content to our documents. Here’s an image we found that illustrates how we think of the edge quite well. It illustrates Samsung’s Dictionary entry on Edge Computing, below:

 On the left, a computing cloud communicates with devices. On the right, an edge computing platform is at work between the cloud and the devices, with the edge computing entities communicating with one another.
Figure 1: A high level view of edge computing architecture.Note that the edge computing platform is nearest to the end user. Source, Samsung Dictionary.

We expect to do similar graphics moving forward.

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