| Abstract |
Concerning an Information Society for all citizens, applications and services should be accessible by people with diverse requirements and preferences, including persons with disabilities. Technological solutions provided today in order to support potentials of alternative access for people with disabilities, are often specialized and consequently of limited use, or closely related to specific technological platforms, which make them obsolete in a short period of time. The development of a system, which will enable the use of applications in a Microsoft Windows environment, supported by the use of binary switches, was carried out in this thesis. Thus, problems concerning the inability to use traditional input devices, such as the keyboard or the mouse, with which people with motion impairments on the upper members have to deal with, are eliminated. In order to achieve our goal, we employed hierarchical scanning techniques with dynamic retrieval of applications hierarchical structure. For the intended target group, the use of hierarchical scanning is the most appropriate method of interaction, mainly due to the rapid interaction it ensures, compared to simple mouse emulators or on-screen keyboards. Furthermore, the dynamic retrieval of an applications hierarchical structure ensures the operation of the scanning system for any application in a windows environment. Consequently, applications become immediately accessible with no need for any modification, in order to support scanning techniques. In this work, we performed, as well, a usability evaluation of a users interaction in a windows environment. The usability metrics were the effectiveness, the efficiency and the satisfaction of users. Analysis of the results, indicated that the system proposed could constitute a useful tool to assist the interaction of a motor impaired user with the applications as well as with the overall environment of Windows.
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Αλληλεπίδραση χρήστη - μηχανής με χρήση δυαδικής συσκευής εισόδου
