transitioning from implicit to explicit, public to personal, interaction with multiple users
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Transitioning from Implicit to Explicit, Public to Personal, Interaction with Multiple Users. Interactive Public Ambient Displays :. Daniel Vogel, Ravin Balakrishnan Department of Computer Science University of Toronto. Why do we need a interactive public display?. - PowerPoint PPT PresentationTRANSCRIPT
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Transitioning from Implicit to Explicit, Public to Personal, Interaction with Multiple Users
Daniel Vogel, Ravin Balakrishnan Department of Computer Science
University of Toronto
Interactive Public Ambient Displays:
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Why do we need a interactive public display?
• Information exchanging
• A dream of ubiquitous computing– A gateway to access our personal information
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How? Challenges
• Public: attention– Not overloading users’ senses – Minimally intrusive
• Personal: privacy
• Sharing interaction
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Bringing people from public to personal
Streitz, et al., 2003
Vogel, et al., 2004
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Design Principles and Interaction Framework
• Goal: seamlessly, fluidly• implicit explicit• Public personal • Solve the dilemma of dual role• Solution: user’s attention (location and
orientation) to the display and relationship between available information type and user’s phase
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Hardware and layout
From top to bottom: weather, office activity, calendar, and messaging
50” plasma screen with toch-sensitive overlay
Vicon for tracking
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Ambient Display Phase
• able to get a sense of the overall information space with a quick glance
• Calm aesthetics, shared use, comprehension and Immediate Usability
• Tech: text labels
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Implicit Interaction Phase
• Calm aesthetics and notification• Tech: vertical bar– :appearance (location)– width (body orientation)– opacity (head orientation)
Notification Flag
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Subtle Interaction Phase I(Overview)
• Distance < 40”• Why• Shared use and Immediate Usability
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Subtle Interaction Phase II(Select)
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Personal Interaction Phase
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Transition
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Informal User Study• four participants• work in an office environment, and were fluent with various
computational media• Our evaluation had two parts. • First
– Method: talk-aloud– how they explore their movements influenced the display and their
interpretation– glove with markers for hand tracking was not used in the first part of
the evaluation• Second
– the gestures performance, gesture hint icons effectiveness, timeline navigation, and the phase of touch-screen initiation
– did not implement help sequences
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Summary• Fluid movement between phases• Techniques for multiple users• Subtle notification• Privacy controls• Self-revealing help• Implicit interaction was enabled by sensing
contextual cues such as body orientation and position, and user proximity to the display.
• Hand gestures and touch screen input support explicit interaction.
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Conclusion• a new style of interactive public ambient display combining
peripheral notification with implicit and explicit interaction for accessing both public and personal information
• Initial user feedback indicates that our techniques are quickly discoverable and appear to be usable.
• A set of design principles and an interaction framework that fluidly moves from implicit interaction with a public ambient peripheral display to explicit interaction
• Taking us a step closer to realizing more sophisticated and useful sharable, interactive, public ambient displays.