Thesis - Teknisk Design

Analysis of usability study5With the usability results and analysis some information may be extracted toanswer the rest of the project questions. But, for some of them furtherstudies or larger, in terms of participants, must be carried out to take someconclusions. Below, for each of the project questions an explanation isgiven.5.1 THIRD QUESTION: Which actions are helpedby the introduction of haptic feedback?To answer this question, the focus must be on navigation haptic feedback becauseis on that situation where haptic feedback must be perceived. There are threenavigation haptic feedbacks, navigation through items, level selectors and scrollthrough list.Navigation through items has been highlighted as the most useful hapticfeedback in the device for the vast majority of the participants. Moreover, in thequestion “In which task do you think haptic feedback has helped you most?” of thequestionnaire, three out of four have answered the main menu. Also, this can bereassured by the performance data. If the deviation of normative path is regarded,in the main menu, all the participant who navigate have lower deviation recordwhen haptic feedback was turn on (figure 4.3). Menus with easy distinguishable itemswith navigation through items haptic feedback have been selected as the mosthelpful situation.During the study, the participants interact with three levels of difficulty onfeeling the different items. Meaning that, every new activity on navigation acrossitems was more difficult to perceive. Items were closer and smaller. The third level64