sharing projectors myungcheol doo & andy wu. intro & motivation increase efficiency of group...
TRANSCRIPT
Intro & Motivation
• Increase efficiency of group meeting– Reduce delay in switching a VGA cable
• Increase the rate of projector usage– Mobile devices– Laptop computers
User Evaluation
Control Group: switch a VGA cable
Experimental group: use software
Task: find 12 photos for making a photo calendar Control Group
Experimental Group
User Evaluation (continued)
Histogram of using cable
0
1
2
3
4
5
6
7
0-3 3-6 6-9 9-12 12-15 15-18 18-21 21-24 24-27 27-30 30-33 33-36
Time (sec)
# o
f su
bje
cts
10 minutes Introduction
20 minutes Condition 1 Observation
5 minutes Rest time
20 minutes Condition 2 Observation
5 minutes Questionnaire Questionnaire
20 minutes Interview Focus group
16 subjects
avg: 19.08
sd: 7.83
median: 14.71
User Feedback
Advantages Disadvantages
Cable •I know who is using
•I can use extensive desktop
•Playing videos
•Plug/unplug cables
•Cabled color is wrong
•How to switch to the projector?
•I have to reboot my laptop??
•Plug and pray
This Software
•Just one click
•Very fast
•Efficient
•Distance meeting?
•Any problem? just re-launch the software
•Security
•Identity
•Software anyone can grab it
•Software delay
•Video may be problematic
•Privacy
Conclusions
• Users like our software (avg: 1.58, sd: 0.42) • Our software is good for:
– Mobile devices– Multiple computer meeting
• But!! Here are the problems:– Privacy
• Extended desktop• Maximize working windows
– Sharing screens vs sharing information• User scenario
– Identity