New technologies are being developed and improved to increase access to the information and communication of everyone, including elderly and people with special needs. Consequently, new interaction techniques have been created, enlarging the possibilities for human- computer interaction through new user interfaces and input techniques.
Several studies have evaluated usability issues of classical computer input devices as mouse and keyboard for older users [36,47]. Mouse manipulation is not easy to learn because it demands high hand-eye coordination, by consequent more cognitive effort [43]. Concerning older adults, some gestures as double clicking and dragging need precise movements of the hands. The emergence of touchscreen devices can be explained by the direct contact on the display screen; there is no need for intermediary devices. This is also a good factor for handheld and mobile technologies which involves new