Apollon - 22/5/12 - 09:00 - User-driven Open Innovation Ecosystems
Maduf10 Mobile Tv Or Tv On Mobile An Jacobs En Dirk Bollen
1. Mobile tv or tv on mobile?
iterative contextual and usability user research
on TV practices and experiences
Dr. An Jacobs (IBBT-SMIT) & Dirk Bollen (IBBT-CUO)
Vrije Universiteit Brussel KULeuven
4. 4
Conceptual redesign : user research
Where, when and how
is watching television on a mobile appropriate?
step 1: Information from other trials,
contextual inquiry, literature
step 2: Proxy technology assessment
= Using existing technologies
that resemble as much as possible
the affordances under development
5. Proxy Technology Assessment (PTA)
Elicit the VARIETY of everyday life, user experiences/
practices to forecast everyday practices with future
technologies
Integrated in a multi method social research plan
a) free access to vodaphone, with/without phone (4 weeks)
b) logging use (Proximus)
c) tasks (week 1)
d) 4 cultural probe question cards (week 3)
e) diary & auto-collecting photos (week 3)
f) in depth interview
with other proxies (after week 4)
Output:
Analysis & recommendations;
Personas & scenarios
6. Recommendations : Technical barriers
onnection
C
Coverage: anywhere?
Speed of connection
consequence: zapping is difficult
ardware:
H
first place a useful phone
quality of image and sound
almost everyone: no earphone use
screen size?
Voor het nieuws gaat dat nog, maar bij de sport zie ik toch graag de bal.”
“
7. Recommendations : Safety and image
Safety issues
Theft
Show off/mister gadget image
Road safety
Want ik vind ook een serieus bezwaar aan het kijken van mobiele
“
televisie dat is dat je daar niet mee op een tram of in een bus of zo
gaat zitten. (...) Allez ja ik zou me toch niet zo dadelijk nog veilig
voelen.”
11. Recommendations : programmes & interactivity
Channel: same as TV View duration log Volume 4 weeks 10 persons
< 5 min. 469
Programmes: short 5 min. - 15 min. 79
15 min. - 30 min. 20
On demand > 30 min. 4
N=572, (01/05/2006 – 31/05/2006)
I: Wanneer kijk je het meeste tv op je vast toestel?
R: Dat is vooral 's avonds.
I: Een beetje een parallel met het mobiel toestel.
R: Ja, alleen dat er 's middags is bijgekomen en de dode momenten overdag.
(Male: 45, non owner)
12. Personas & scenarios
Aim: communication of results in actionable way
User behavior and attitudes clustering
Three potential profiles: Pedro Mertens
luggers
P “ ik ga eerder op zoek gaan
naar informatieve euh
ocial fillers
S programma's”
ong viewers
L
- 43 j, Denderleeuw, girlfriend
- ranslator; commutes 20 min
T
Mobile tv scenario plugger - asketbal, skiing, not much tv
B
- ews & NBA competition
N
- edro use the mob tv on the train or waiting
P - eekend: film
W
- e watches for a short period, e.g news
H - adgets & design
G
- ob tv helps him to keep him informed
M - nternetradio, RSS feeds, looks for
I
in a quick way specfic information, downloaden
music, games
13. 13
Design for mobile devices
Swiss army knife
Sms
Internet
Music player
Camera
Not the same as the real stuff
14. 14
Recommendation from user study
Mobile user is shifting context /environment
more interruptible and easy to distract
Outside/inside
Not performing one obvious task
Present in a public, social space
Quality video and audio
‘Channel hopping’ and navigation (faster, less steps, intuitive language use)
Faster
less steps
intuitive language use
Mobile tv = extension of tv
In competition with other activities
15. 15
Literature on mobile interface & TV
All video content should be provided through a single ‘Mobile tv’ area
Putting the guide between the user and the content significant
changes the nature of the tv experience (Knoche & McCarthy)
Avoid obstructing tv screen space
Provide a clear way of adjusting the channel without going ‘back’
Different forms of channel selection (Taylor & Harper)
1. Channel hopping
2. Wait for information
3. Knowledge of program gide
4. Paper program guide / on screen EPG
16. 16
Conceptual model
First abstract design of the user interface
Based on information from user- and task analysis
Focus on:
Overall structure
Logic
Navigation
17. 17
Concept model : channel hopping
Iteration 1: try out carrousel idea
Iteration 2: adaptation on technical requirement on loading time
22. 22
Paper prototype
Iterative development by user tests
• 6 users
• different scenario’s and functionalities
• by doing 10 tasks
• pre and post questionnaire
23. 23
Paper prototype results
Navigation
Begin trial : users prefer navigation carousel
End trial : users prefer EPG
Caution! We did not simulate channel loading time
No information about long term use
EPG
Function timeline in EPG is not clear
Selection of programs in EPG
24. 24
Paper prototype results
Suggested improvements EPG
25. 25
Implementation
DVB-H first choice
But:
Implementation of concept EPG & carrousel on a 3G device
Version of paper prototype without suggested
improvements
A lot implementation problems
Platform
Java
But: test version realized in short development time
26. 26
Evaluation research setup
Step 1: Task observation 3G
introduction of epg and carrousel for 3G test users
- interface: same issues as with paper prototype
Step 2: diary and focusgroup 3G & DVB-H
- new 4 week period (Nov-Dec 2007) 2 groups:
1) first group of 7 persons recruted by survey MICT in
Ghent using DvB-H
-experienced 3G prototype during focusgroup
2) 9 people from first phase PTA research reusing 3G
with prototype application
-experienced DVB-H during focusgroup
• oth 2 week diary and auto-collecting photo’s
B
27. Evaluation results
Reaction on the prototype
EPG is popular
Gives a good program overview
Familiar interface : tv
EPG solution too advanced
Channel hopping is improved with introduction of navigation
carousel
Comparing practices: Appropriation of television on mobile device
Same topics as in 2006
Validation of previous insights
Validation of made persona and scenario’s
No visible changes in attitudes and behavior with mobile TV
Changing reference point people experienced with 3G in 2006