input techniques

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(No Transcript)
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input techniques
akshay kothari
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whats an input device, anyway?

• Wikipedia any peripheral used to provide data
  and control signals to an information processing
  system

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properties of input devices

• Property Sensed
• Number of Dimensions
• Indirect vs. Direct
• Device Acquisition Time
• Gain
• Other metrics

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input device states
Out of Range, Tracking, Dragging
Tracking, Hover, Left Click, Dragging, Right Click
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evaluation of input devices

• Fitts Law Hicks Law
• Steering Law and Minimum Jerk Law
• Keystroke-Level Model and GOMS Analysis

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feedback response to an input

• Proprioceptive and Kinesthetic Feedback
• Kinesthetic Correspondence
• Snapping Behavior and Active Haptic Feedback

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modalities of interaction
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input devices

• Pointing Devices
• Mouse
• Joysticks
• Indirect Tablets
• Touchpads
• Touchscreen Pen-operated Devices
• Text Entry
• QWERTY keyboard
• Mobile text entry
• Handwriting Recognition

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Mouse
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Was the mouse designed opportunistically? Or was
the need formulated first followed by the design
and choice of technology for implementation?
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What is the future of input devices?
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whats an input device, anyway?
informing the design of direct-touch tabletops
http//www.youtube.com/watch?vrP5y7yp06n0
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• Tabletop content orientation
• Occlusion and reach
• Gestural interaction
• Legacy application support
• Group interaction techniques
• Walk-up and walk-away usage issues

usability challenges
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Does a large tabletop provide spatial and
perceptual cognitive advantage in helping users
accomplish their tasks?
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Under what circumstances does this cognitive
assistance occur, and when does it break down?
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multi-touch systems that I have known and loved
Bill Buxton
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• It took 30 years for the mouse to become
  ubiquitous by that measure, multi-touch
  technologies have 3 years to go before they fall
  behind.
• Everything is best for something and worst for
  something else
• Input is still primitive, and wide open for
  improvement.
• More is less or less is more
• There is no free lunch