Today’s Trends
• Mobile phones are permanent companions in everyday life
• Mobile phones are equipped with physical sensors
• Sensor networks are spreading
• Virtual sensors (calendars, email content, …) and logical sensors (databases of social
communities, …) provide context information on users, locations, events, …
Context aware systems definition
A System is defined to be context-aware if it is able to assist its users without their explicit
interactivity.’
Context Awareness flow
Aquisition -> Express context -> Representation/models -> Situation Recognition. -> Perception -> adaptation