1. Solving One Task with Many Devices
Marta Kristín Lárusdóttir
Reykjavik University
Ebba Þóra Hvannberg
University of Iceland

2. Always On

3. The User Roles The businessperson role The spouse role The kid role
Uses DUS many times a day
Very technically minded person
The spouse role
Uses DUS in fewer environments
The kid role
Uses DUS at school or friends
Will use DUS many times a day

4. The Task Model Open a Web session Make a call Receive a call
Transfer a call
Change an environment
Add an address book entry
Use an address book entry
Adding a calendar event – Our example

5. The Complexity

6. Content model Calendar/Event Info. space Contacts Info. space
Contact Persons
Calendar
Select
Add event
Event
One content model for each device
Select Contact
List
Select Modality
Personal Computer
Save

7. Content model Calendar Info. space Contacts Info. space Calendar
Contact Persons
Add event
Select
Event Info. space
Event
Select Contact
List
Personal Digital
Assistant
Select Modality
Save

8. Navigational Map Main Page Calendar Event Contacts
Home
Home
Select calendar
Save/cancel
Calendar
Event
Add event
Ok/cancel
Select contact list
Contacts
Personal Digital Assistant

9. Combine information spaces
Main Page
Home
Home
Select calendar
Ok/cancel
Calendar
Event
Add event
You don’t need to let the Event object pop up. You can afford to have it displayed all the time because of added screen resources.
Select contact list
Ok/cancel
Contacts

10. Navigational map for PC
Main Page
Home
Select calendar
Calendar / Event
With more complex applications, navigation becomes harder. With strict design constraints, e.g. Screen resources, modeling can be of more help.
Select contact list
Ok/cancel
Contacts

11. Architecture Calendar Calendar / Event transfer Event Home environment
Office environment
Personal Digital Assistant
PersonalComputer

12. Summary Current Contribution Content model A new environment model
Navigational map
Models are useful when we have strict design constraints
A new environment model
Usability testing becomes more complex
An Architecture model

13. Thank you for listening
e.t.v. mynd hér, t.d. landslag