Date Added: Apr 2011
Ubiquitous systems emphasize in designing services to the users anywhere and anytime regardless of users' locations. Existing mobile systems usually have problems that they lack S.C.A.L.E. (Scalability, Connectivity, Adaptability, Liability, and Ease-of-use) design factors that a typical ubiquitous system must support. To design these factors in a mobile system is very expensive during system set-up, reconfiguration and modification stages as there are no proper and efficient solutions available. In addition, the current mobile systems lack security, privacy and wireless accessibility features so that they are prevented from expanding widely.