Experiences Using Usability Techniques in Development of Active Spaces RBAC GUI

This paper presents a case study in developing an administration GUI using Cognitive Walkthrough and usability testing. We introduce the evaluation procedure of the GUI. We then compare the predictions made by Cognitive Walkthrough with the usability problems found in empirical usability testing. The strength and weakness of the two methodologies and their respective task scenarios are discussed. Based on the analysis, we arrive at conclusions which could be used to improve the effectiveness of the two evaluation methods and point out the problems still open.