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ubiquitous computing and augmented realities
• ubiquitous computing
– filling the real world with computers
• virtual and augmented reality
– making the real world in a computer!
Challenging HCI Assumptions
• What do we imagine when we think of a computer?
“The most profound technologies are those that disappear.” Weiser
• 1990’s: this was not our imagined computer!
Ubiquitous Computing
• Any computing technology that permits human interaction away from a single workstation
• Implications for
– Technology defining the interactive experience
– Applications or uses
Underlying theories of interaction
Scales of devices
• Weiser proposed
– Inch
– Foot
– Yard
• Implications for device size as well as relationship to people
Device scales
• Inch
– PDAs
– PARCTAB
– Voice Recorders
– smart phones
• Individuals own many
of them and they can all communicate with each other and environment.
• Foot
– notebooks
– tablets
– digital paper
Individual owns several but not assumed to be always with them
• Yard
– electronic whiteboards
– plasma displays
– smart bulletin boards
• Buildings or institutions own them and lots of people share them.
Defining the Interaction Experience
• Implicit input
– Sensor-based input
– Extends traditional explicit input (e.g., keyboard and mouse)
– Towards “awareness”
– Use of recognition technologies
Introduces ambiguity because recognizers are not perfect