Abstract
At a time when there is the widespread use of new applications with touch and gesture interfaces, it is important to question whether these represent a positive differential to the accessibility of the senior population or whether they are yet another excluding info artifact. The purpose of this article is to present preliminary results for the potential and limitations of touch and gesture interfaces, through the proposal of usability heuristics for this audience, which subsequently will be proven, rebutted and calibrated by a prototype game for tablets with features based on cognitive and motor rehabilitation. The intention is that the game prototype based on the activities of harvesting, collecting of bunches of ripe grapes, carrying baskets and crushing grapes to make wine prove or refute the proposed heuristics.
Highlights
The ageing of society is an imminent reality, due to the improvement of public policies and the increase of multidisciplinary research through new medicines or implementation of assistive technologies
The goal of the research is the composition of usability heuristics for applications based on multitouch interfaces according to the physiological characteristics of senior users
Regarding the quality of feedback in Natural User Interfaces (NUI) systems, Wigdor and Wixon [42] advise that in systems based on single touch, it should be developed a set of visual states and unique transitions for each state by removing the ambiguities of unexpected behavior
Summary
The ageing of society is an imminent reality, due to the improvement of public policies and the increase of multidisciplinary research through new medicines or implementation of assistive technologies. Multitouch interfaces, the currently most common example of TUI, may be more effective in reducing cognitive load and fostering a better interaction experience They can be inadequate for tasks that involve precision, in cases of accidental activation caused by Parkinson’s or arthritis. Papaléo [28] shows some diseases common to the senior citizens: Presbyopia, for instance, is characterized by the accommodation of the lens, i.e. there is a loss of elasticity of this component of the human eye, making it inflexible and unable to distinguish shapes and colors Another problem related to the vision of the elderly is cataracts, characterized by a gradual opacity of the lens of the eye, resulting in a hazy vision highly susceptible to reflected light. Consistency of elements, coherent encodings, volume segregation and chromatic aspects are indispensable, as they may contribute to the proper use of systems
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