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Metrics that could be used in mobile applications development for people with visual impairments: A preliminary literature review

Abstract:

Background: The widespread use of mobile devices has motivated the parallel development of countless mobile applications (apps), whose characteristics benefit most people. However, there are segments of people with visual impairments (PVI) who have been marginalized due to usability and accessibility issues. Aim: To identify primary studies which report metrics of usability, accessibility or both, applicable to the development and assessing of mobile systems, including requirements of PVI. Method: A Preliminary Literature Review (PLR) was done based on the guidelines of a Systematic Literature Review (SLR). Results: 6 primary studies reported 73 metrics for apps, which were grouped into 8 usability contexts: visual content, effectiveness, navigability, efficiency, learnability, satisfaction, understandability and accessibility. Conclusions: The most relevant contexts are Visual content, effectiveness, navigability, understandability, and accessibility; of which, the first three group the highest number of usability metrics.