* Traditinal HCI design focuses on users completing tasks, Ubiquitous computing is if in a work environemnt, however for computers to become invisible around use they must be changing the way human-computer interfaces are designed for a natural human way of doing things. Humans often juggle a number of activities and do thing in many different ways. HCI design needs In order to be modeled around humans doing activities invisible to users, computers must interact with users naturally instead of the traditinal way of completing tasks sequetially.