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•  intentional use: Lean forward, brief/surprise me

•  interactivity: high •  screen: medium •  rich multimedia and interactive content •  mainly for personal (deeper) usage

•  intentional use: good companionship, interact, brief me

•  interactivity: high •  screen: small •  content mainly for ad hoc usage

•  intentional use: wallpaper, lean backward, surprise me

•  interactivity: easy, simple, low •  screen: large, HDTV, home cinema (high quality) •  rich and multimedia content intended for shared

usage Personal context

Shared context Mobile context

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