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Reference.org
Context-aware pervasive systems
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<p>Context-aware computing refers to a general class of <a href="/facts/Mobile_computing/eHT86bQU">mobile systems</a> that can sense their physical environment, and adapt their behavior accordingly. </p><p>Three important aspects of context are: where you are; who you are with; and what resources are nearby. Although location is a primary capability, <a href="/facts/Location_awareness/BNHaFswz">location-aware</a> does not necessarily capture things of interest that are mobile or changing. Context-aware in contrast is used more generally to include nearby people, devices, lighting, noise level, network availability, and even the social situation, e.g., whether you are with your family or a friend from school. </p>