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Table 8 Responses to the HARUS questionnaire for keypad-based and marker-based AR systems

From: Evaluating system usability of mobile augmented reality application for teaching Karnaugh-Maps

Parameters   Questions Keypad-based MAR Multiple marker-based MAR
Manipulability Q1 “I think that interacting with this application requires a lot of mental effort.” (R) 4.26 3.42
  Q2 “I thought the amount of information displayed on the screen was appropriate.” 4.42 3.63
  Q3 “I thought that the information displayed on the screen was difficult to read.” (R) 4.05 3.57
  Q4 “I felt that the information display was responding fast enough.” 4.00 2.94
  Q5 “I thought that the information displayed on the screen was confusing.” (R) 4.63 4.15
  Q6 “I thought the words and symbols on screen were easy to read.” 4.10 3.52
  Q7 “I felt that the display was flickering too much.” (R) 4.26 3.63
  Q8 “I found the system very cumbersome to use.” 2.89 3.94
Comprehensibility Q9 “I think that interacting with this application requires a lot of body muscle effort.” (R) 4.57 4.10
  Q10 “I felt that using the application was comfortable for my arms and hands.” 4.05 3.94
  Q11 “I found the device difficult to hold while operating the application.” (R) 4.00 3.37
  Q12 “I found it easy to input information through the application.” 4.31 3.31
  Q13 “I felt that my arm or hand became tired after using the application.” (R) 4.26 3.84
  Q14 “I think the application is easy to control.” 4.05 3.78
  Q15 “I felt that I was losing grip and dropping the device at some point.” (R) 4.63 4.47
  Q16 “I think the operation of this application is simple and uncomplicated.” 4.21 3.89