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A unified methodology for the evaluation of accessibility and usability of mobile applications

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Abstract

This article reports a unified methodology developed to evaluate the accessibility and usability of mobile computing applications, which is intended to guarantee universal access as far as possible. As a basis for the methodology, this paper presents an analysis of the accessibility guidelines, conducted to take into account the specificity of mobile systems, as well as a set of usability heuristics, specifically devised for mobile computing. Finally, it presents the results of the application of the proposed methodology to applications that have been semi-automatically developed by the MAIS Designer, a new design tool that provides applications suited to different mobile devices.

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Notes

  1. The severity problem classification developed by Nielsen in his Heuristic Evaluation method [50] is used. Problems are evaluated according to a severity rating scale of 0–4. 0 means no usability problem at all; 1 = cosmetic problem only: need not be fixed unless extra time is available on project; 2 = minor usability problem: fixing this should be given low priority; 3 = major usability problem: important to fix, so should be given high priority; 4 = usability catastrophe: imperative to fix this before product can be released.

  2. It is worth noting that an individual problem is sometimes indicated by the participants to be associated to more than one heuristic and thus the total of the right column of Table 2 does not equal the actual number of problems.

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Acknowledgments

Research partially supported by the MIUR/FIRB Project “MAIS” (http://www.black.elet.polimi.it/mais) and the EC NoE G038-507618, “DELOS” (http://www.delos.info/). We would like to thank Alan Dix for many fruitful discussions and comments on earlier drafts of this paper and the anonymous Reviewers for their useful suggestions.

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Billi, M., Burzagli, L., Catarci, T. et al. A unified methodology for the evaluation of accessibility and usability of mobile applications. Univ Access Inf Soc 9, 337–356 (2010). https://doi.org/10.1007/s10209-009-0180-1

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