Principles

• Challenges in designing ubicomp systems
  • Revealing interaction possibilites
  • Directing actions
  • Establishing connections
  • Providing feedback
  • Avoiding and correcting mistakes
  • Managing privacy and security
• Shadows & avatars
  • Information shadow links object to its origin
  • Avatar is one or more representations of a service
• Proxemics
  • Intimate: 0–1.5’
  • Personal: 1.5–4’
  • Social: 4–12’
  • Public: 12’+
• Ubicomp principles
  • invisibility
  • manual override
  • feedback
  • adaptability
• Ecology design framework
  • Consistent design
  • Continuous design
  • Complementary design