  One of the main reasons that cause seniors to face accessibility barriers
when trying to use software applications is that the age-related user interface
(UI) needs of seniors (e.g., physical and cognitive limitations) are not
properly addressed in software user interfaces. The existing literature
proposes model-driven engineering based UI adaptations as a prominent solution
for this phenomenon. But in our exploration into the domain, we identified that
the existing work lacks comprehensiveness when it comes to integrating
accessibility into software modelling tools and methods when compared to a
well-recognised accessibility standard such as the Web Content Accessibility
Guidelines (WCAG). Thus in this paper, we outline a research roadmap that aims
to use WCAG as a reference framework to design domain-specific languages that
model the diverse accessibility scenarios of senior users via user context
information and UI adaptation rules modelling so that they meet the
accessibility standards specified in WCAG.
