Table 1.

Prototype qualitative evaluation.

Question	Possible answers
1–How would you describe the prototype regarding how difficult is it to be learned to used	(a) Difficult (b) Requires effort (c) Not a big deal (d) Easy to learn
2–How would you say the system performs in pointing and marking the surrounding buildings?	(a) Bad (b) Regular (c) Good (d) Excellent
3–Is the system's response time adequate?	(a) Yes (b) No
4–How would you describe the system's usability	(a) Easy to use (b) Regular (c) Some difficulty (d) Difficult