ACCESS: a technical framework for adaptive accessibility support

In this paper we outline ACCESS -- an open source, cross-platform, plug-in enabled software framework designed to provide a mapping between user needs and system configuration. The framework inverts the responsibility for making system configuration changes so that it lies with the computer rather than the user. In turn, the responsibility for identifying when changes should be made is delegated onto the plug-ins that have been incorporated into the framework. User feedback is solicited by a simple reinforcement mechanic through which individuals can like or dislike adaptations that are made. User interaction adjusts the probabilities that plug-ins will be selected in future, and also allows for plug-ins to adjust their own algorithms in line with user preferences. Results of experimental testing are encouraging, and show strong support for the perceived benefit, tractability and appropriateness of the framework.