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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?.
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Transitioning from Implicit to Explicit, Public to Personal, Interaction with Multiple Users InteractivePublic Ambient Displays: Daniel Vogel, RavinBalakrishnan Department of Computer Science University of Toronto
Why do we need a interactive public display? • Information exchanging • A dream of ubiquitous computing • A gateway to access our personal information
How? Challenges • Public: attention • Not overloading users’ senses • Minimally intrusive • Personal: privacy • Sharing interaction
Bringing people from public to personal Streitz, et al., 2003 Vogel, et al., 2004
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 availableinformationtype and user’s phase
Hardware and layout 50” plasma screen with toch-sensitive overlay Vicon for tracking From top to bottom: weather, office activity, calendar, and messaging
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
Implicit Interaction Phase • Calm aesthetics and notification • Tech: vertical bar • :appearance (location) • width (body orientation) • opacity (head orientation) Notification Flag
Subtle Interaction Phase I(Overview) • Distance < 40” • Why • Shared use and Immediate Usability
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
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.
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.