Code	Questionnaire item
S1	I think I will use this application often
S2	I think this application is too complex (displays many unnecessary things)
S3	I find this application easy to use
S4	I need technical assistance (tutorial/FAQ) to use this application
S5	I think the features provided in this application are well designed
S6	I judge too many inconsistencies in this application (example: features, images, explanations)
S7	I feel most people will quickly find it easy to use this application
S8	I think this application flow is very complicated to use
S9	I feel very confident using this application
S10	I need to learn many things to use this application properly