Figure 2 User interface of the i-Showcase kiosk system.
Related Figures (7)
Fig. 1. The i-Showcase kiosk system. The participants of the study consisted of 15 authentic users who were clients present at the mall during the research. They participated in the study on a voluntary basis. The guideline created by Nielsen and Landauer (1993) was used to determine the number of users. According to this guideline, 15 users are sufficient to determine most of the usability problems in a system. The ages of users varied between 12 and 52. Of them, 9 were males, 6 were females, 8 were students, 6 were employed and 1 was a housewife. Nine of the participants had experience using a kiosk, and 6 did not. observation notes in addition to participants’ statements about problems using the system. The initial version of the form was presented to an expert in the field of human-computer interaction to verify its validity in terms of whether the data collected are relevant to a reasonable evaluation of the kiosk. Then the form was revised according to the expert's feedback and rechecked by the expert. The tasks assigned to the participants. Table 1 Participants’ task achievements and durations. Descriptive information about the tasks. Table 3 Mann-Whitney U test results of task durations by kiosk experience. Mann-Whitney U test results of task durations by gender.
