Ubiquitous computing (or "ubicomp") may be a concept in software engineering and computing where computing is formed to seem anytime and everywhere. In contrast to desktop computing, ubiquitous computing can occur using any device, in any location, and in any format. A user interacts with the pc , which may exist in many various forms, including laptop computers, tablets and terminals in everyday objects like a refrigerator or a pair of glasses. The underlying technologies to support ubiquitous computing include Internet, advanced middleware, OS, mobile code, sensors, microprocessors, new I/O and user interfaces, computer networks, mobile protocols, location and positioning, and new materials. This paradigm is additionally described as pervasive computing, ambient intelligence, or "everyware". Each term emphasizes slightly different aspects. When primarily concerning the objects involved, it's also referred to as physical computing, the web of Things, haptic computing, and "things that think". instead of propose one definition for ubiquitous computing and for these related terms, a taxonomy of properties for ubiquitous computing has been proposed, from which different kinds or flavors of ubiquitous systems and applications are often described.