Ubiquitous Computing

1
Ubiquitous Computing
2
Agenda

• Questions
• Reminder No office hrs this afternoon
• Reminder Guest lectures start Weds
• Recap of evaluation techniques
• Introduction to Ubicomp

3
Evaluation techniques

• Questionnaires
• Cognitive walkthrough
• Heuristic evaluation
• Think aloud
• Empirical studies
• Pager/beeper studies
• Journal/diary studies

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Who? Where? How long?

• Questionnaires
• Cognitive walkthrough
• Heuristic evaluation
• Think aloud
• Empirical studies
• Pager/beeper studies
• Journal/diary studies

5
Ubiquitous Computing

• Computation anyplace, anytime
• Invisibility
• Physical/virtual
• Replace HCI - NO! new focus
• Touches many areas of computer science

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Ubicomp GA Tech Perspective

• Natural UIs
• Capture and Access
• Context-aware computing

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Natural/Implicit Interfaces

• Integrate into human life
• Pen input
• Gesture
• Speech
• Perceptual UI
• Tangible UI

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Context-Aware Challenges

• More Context
• Who, What, Where, When, Why
• Fusion
• Uncertainty
• Identity Vision Speech Footfall

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Capture Access Challenges

• Compelling applications
• Design records
• Elephant box
• Scale
• Annotations
• Indexing, fusion, summarization

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Challenge of Evaluation

• Bleeding edge technology
• Novelty
• Unanticipated uses
• Quantitative metrics

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Social Issues
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Mark Weiser

• Xerox PARC (now PARC)
• Ubicomp visionary

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What is ubiquitous computing?
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Not an interface problem?
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Who owns technology?

• Tabs truly distributed
• Pads antidote to windows
• Boards different tools than workstation
• Laptops why doesnt this fit the vision?

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Ubicomp vs. VR?
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What makes technology disappear?
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Privacy encryption concerns
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Technological limitations
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Weisers scenario

• Technologies?
• Natural interfaces, context awareness, capture
  access
• Social considerations

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Social improvements

• Information associated with every object
• Computing fitting into the human environment ?
  refreshing and not frustrating?

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Conclusions

• Just scratched the surface
• Scale hard to imagine
• Real life interaction noisy, erroneous
• Continuous interaction time sensitive
• Evaluation