Context-aware computing refers to a general class of mobile systems that can sense and explore user's context in order to provide them with proper and useful Services. These services are dynamic and able to satisfy the user's current needs based on context changes in user location, physical environment etc Context-awareness implies intelligence that enables an application to discover, reason, and predict a situation, and adapt to it in a dynamically changing environment Context-aware applications can determine their behavior by sensing and exploring the user’s content without explicit user intervention. The important aspects of context are where you are, who you are with and what resources are nearby not limited to nearby people, devices, network availability