Context-aware technologies are systems that can sense and respond to their environment and user needs. They utilize data from various sources, such as location, time, and user behavior, to provide personalized experiences. For example, a smartphone can adjust its settings based on whether the user is at home, at work, or in a public place. These technologies enhance user interaction by making devices more intuitive. Smart home systems can automatically adjust lighting and temperature based on the time of day or the presence of people. Similarly, wearable devices can track health metrics and provide feedback tailored to the user's activity level and context.