MultiUser Affordances for Large, HighResolution Displays

1
Multi-User Affordances for Large, High-Resolution
Displays
2
Types of Multi-User Affordances

• Affordances for
• direction interaction
• secondary awareness
• group size

3
Direct Interaction Affordances

• Touch screen is reliable
• Simple gestures reduce cognitive load
• Rank can be used for conflict resolution
• Divided space or shared space

4
Direct Interaction Affordances
Moving as a meaningful action rather than UI
widget artifact
5
Secondary Awareness Affordances

• Window switching, scrolling can be disorienting
• Closer users become part of the display
• Primary/close users benefit from dense data
• Selection/placement of larger figures can
  increase collaboration
• Primary can benefit from status information of
  secondary users

6
Group Size Affordances

• Display large enough so there is enough space
• High enough resolution so not too far apart

7
Observations

• WIMP does not necessarily apply
• Menus and static targets are far away
• Pulled-down menu with more than 1 cursor?
• Should be useful from two different distances
• Like a newspaper, both for interface and
  visualization
• Concurrency issues with truly parallel inputs
• Natural, intuitive gestures
• Different applications require different designs

8
References

• Kelly L. Dempski and Brandon Harvey from
  Accenture
• 1 Touchable Interactive Walls Opportunities
  and Challenges. IFIP 4th International Conference
  on Entertainment Computing, Japan, 2005.
• 2 Multi-User Affordances for Rooms with Very
  Large, Interactive, High Resolution Screens.
  Computer Human Interaction Virtuality, Portland,
  2005.3 Supporting Collaborative Touch
  Interaction with High Resolution Wall Displays.
  2nd Workshop on Multi-User and Ubiquitous User
  Interfaces (MU3I) at IUI, 2005.