Summary
Rich Internet Applications have many things in common with JavaScript- and Ajax-based web applications:
Provide role, state, and name information for each control
Guarantee users are notified of changes and updates
Create meaningful structure and navigation sequences
Ensure keyboard-only operation
The difference lies in the ability of RIAs to create richer objects. We hope that universal design will be baked into any toolkit a developer chooses to use, but in more cases than not, you will need to take extra steps to ensure accessibility. We hope that the overlap in needs and constraints between mobile and accessibility design will drive developers to take these additional steps.
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