Abstract
A number of methods and measures have been used by researchers in software evaluation. Usability metrics is one of the approaches that has been used as a guideline to evaluate the quality of the system in many mobile applications. However, the metrics used for evaluation method keep changing due to new inventions of mobile phones. Thus, there is a need to create a dynamic model for evaluation that can grow together with new inventions and technology. In this paper, a dynamic usability metrics model for evaluation of mobile applications was designed. The model comprises usability goals, questions and metrics for evaluation of applications on mobile phones. To ensure that the model is reliable and effective, a usability study was conducted on two applications installed in different mobile phones. This model proves to be applicable for evaluation of mobile phone applications whereby its questions and metrics can be dynamically changed accordingly to comply with the requirements of the evaluators.
Highlights
Usability evaluation has grown into a well-established research area
This research area which has focused on generic usability metrics has been countered by others who argue in favour of using specific usability metric
The discussion of this difference between generic and specific has mostly been a matter of opinions, and it has not been prominent in the literature on the comparison of usability metric, e.g. Bertoa, Troya and Vallecillo (2006) and Ahmed, Mohammad, Rex and Harkirat (2006)
Summary
Usability evaluation has grown into a well-established research area. The first guidelines to evaluate the application system as well as today’s mainstream is ISO 9241 – 11 standards (ISO, 1998). New inventions and current features on mobile phones will reflect existing evaluation metrics and guidelines. On the other hand, the GPS receiver inside the mobile phones will benefit many users by using an application linked to the GPS receiver, for example, SatNav application and find-me application All these applications require new metrics for evaluation method. Published work on the method(s) used to evaluate these applications with these new features on mobile phones are very limited and focus only on mobile devices and not the application itself. Many current models and methods which aim to evaluate usability still have some limitations, for instance, they are not intended for developers who are not familiar with the field of Human Computer Interaction (HCI) and are difficult to apply. It is general and very difficult to apply to specific domains (Bertoa et al, 2006); Ahmed et al, 2006)
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