Implicit Human Computer Interaction Through Context
Albrecht Schmidt
TecO, University of Karlsruhe,
Germany
albrecht@teco.edu
Abstract.
In this paper the term implicit human computer interaction is defined.
It is discussed how the availability of processing power and advanced sensing
technology can enable a shift in HCI from explicit interaction, such as
direct manipulation GUIs, towards a more implicit interaction based on
situational context. In the paper an algorithm that is based on a number
of questions to identify applications that can facilitate implicit interaction
is given. An XML-based language to describe implicit HCI is proposed. The
language uses contextual variables that can be grouped using different
types of semantics as well as actions that are called by triggers. The
term of perception is discussed and four basic approaches are identified
that are useful when building context-aware applications. Providing two
examples, a wearable context awareness component and a sensor-board, it
is shown how sensor-based perception can be implemented. It is also discussed
how situational context can be exploited to improve input and output of
mobile devices.
Keywords.
context awareness, context sensing, implicit human computer interaction,
perception, ubiquitous computing.
In
Personal Technologies Volume 4(2&3),
June 2000. pp191-199
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