1. Longitude Usability Study Final Presentation Amir Malik Fiel Guhit Viet Pham Sabel Braganza

2. Methodology Usability study with Non-Google Latitude users and Google Latitude users Scheduled study with 16 users (2 did not show up) o 8 females & 6 males. Users performed tasks o One speaker and one note taker o Audio & Screen recording o Recorded time for certain tasks. o Tracked clicks and answers given by users o Survey following study Transcribe and Analyze o Replayed audio/screen recordings and documented all actions and words spoken by user and researcher o Analyzing results of task performance and survey answers

3. Control Group v. Latitude Group 3 participants heard of Google Latitude. 2 participants actually used Google Latitude.

4. Results: Control Group Differences between user phone type: Users accustomed to non-touch interface phones o Tapping the screen is not as intuitive, slow to realize which entities are clickable. o When clicks were unresponsive, they would click again repeatedly before trying something new.

5. Results: Control Group Users familiar with a touch interface o Biased toward gestures on their own device o Quick to navigate through interface. o When clicks were unresponsive, they stated "Well that doesn't work" and they might not try it again.

6. Results: Latitude Group This group showed familiarity with Latitude or Google Maps. In using the interface, they: o expected double click zoom in o expected tap and drag to move the map around o Voiced appreciation that the icons were automatically centered on zoom in and out One Latitude user did not like the break concept; wanted to be found just in case of emergencies o "...I thought I could leave this application on and if someone wants to find me or message me then they can do that, but I have to have constant interaction with this application. I would rather have it running in the background so that way people could find where I am as suppose to having to go on it more frequently."

7. Overall Findings Attitudes Towards Location-sharing Technology Question: If you were to click on Ben's icon 10 times a day over the next few days, how do you think Ben might react? Responses from Participants: "Depending on our relationship. If we were close friends then he wouldn't mind so much. But he might have an issue with privacy. Maybe he is somewhere and he doesn't want anyone to know where he is. He might have a big issues with that." - Participant #7 (Male, 22, Latitude Group).

8. Overall Findings "Well like I am stalking him or on the other hand maybe we are really suppose to meet somewhere." - Participant #12 (Male, 32, Latitude Group). "Because I think that when I click on Ben to request his location he will be notified that I did. Ben might think that I am interested in where he is" - Participant #10 (Female, 25, Control Group). Few participants understood that Ben could see that he/she has clicked on him each time. Ben would see that he/she clicked on him 10 times through the Longitude log. Did participants understand this feature of Longitude?

9. Overall Findings Question: What do you think about not being able to automatically disclose your specific location with people whom you do not interact frequently with?

10. Overall Findings (contd.) Responses from Participants: "I think it is a good feature because I wouldn’t want people to know my location all the time…every minute. I would actually appreciate that if not a lot of people know where I am." - Participant # 10 (Female, 25, Control Group) "I like that because it gives me more privacy. I know that random people, actually people who are in my friend list, who I don’t frequently contact are not able to find out where I am all the time. That’s nice that I have that privacy." - Participant #7 (Male, 22, Latitude Group)

11. Overall Findings (contd.) "I like that because it gives me more privacy. I know that random people, actually people who are in my friend list, who I don’t frequently contact are not able to find out where I am all the time. That’s nice that I have that privacy." - Participant #7 (Male, 22, Latitude Group)

12. Overall Findings (contd.) Follow-Up Questions: What about more specifically for a nosy mother- in-law or a boss? What about more specifically for a close friend, old friend, or a spouse, or significant other? Responses: Most participants didn't want to automatically reveal location to a nosy mother-in-law or boss, but a close friend, old friend, or spouse was fine. For a significant other - "Depends on the relationship".

13. Participant suggestions for improvement Interface: Have a way to rearrange friends in the list o currently listed by frequency of contact o give an option to arrange by frequency or alphabetized Instead of "less frequent contacts," on friend bar put "see all contacts" o total number instead of adding 4

14. Participant suggestions for improvement Interface: Double click to zoom in o instead of small magnifying glass at the bottom Pop-up Hint boxes or Cues o to guide through first time usage o "It was hard to realize that I had to click on Ben to have the menu show up to cal him, since I am not familiar with the application I wouldn't know that I could call him." - Participant # 10 (Female, 25, Control Group) Short Tutorial for New Users o "A short tutorial for new users would be helpful for them to get started. For example, the pause button, I didn't know that it would lead to a break."

15. Participant suggestions for improvement Functionality Sending a location request should count toward frequency of contact o currently: call, text, email, Facebook only. Blocking Friends o How to block a group of friends? Distribution of random breaks o How random?

16. Usability Script Improvements Researcher/Script Bias: wording in script guides participant comments "Please comment on whether this is useful or not." o Using the word "useful" suggests participant answers "Your next task is to use Longitude to tell me where Ben is now." o "I guess since you asked, 'where is he now?' I guess he could've changed" -Participant #1 (Female, Control Group) o Not necessarily intuitive in the interface, researcher guided

17. Revised Timeline