【正文】 umber of approaches and concept for this, which varies to each other in some implementationcontext.In 1994, Praveen Bhagwat et al. [1] proposed that 70s was the time of timesharing and multiprogramming revolution in the puter industry. 80s was the platforms for emerging powerful and economic alternative to centralized mainframe systems.The driving force behind this revolution was the microprocessor technology, which shrunk the size of the puting device to a point where it could be used as a desktop modity. 90s was the time for network puting into what is more popularly known as Mobile Computing. In the era of 90s we adopt new technology over old technology and make puting more easily and efficiently.In 1996, Dix and Beale [4] proposed that mobility is central to every concept and devices. Mobile work is not equivalent with electronic works, but they share some characteristics. The most popular example is the person who works at home instead of muting to a distant example is when any mobile worker fixed all task at any remote place, and work from any other place. This provides a central role for mobile in every field.In 1996, Kleinrock et al. [5] proposed a concept of Nomadic puting and munications, which will dramatically change the way people access information. A paradigm shift in thinking about applications of the technologies involved. It exploits the advanced technologies of wireless, the Internet, global positioning systems, portable and distributed puting to provide anytime, anywhere access. It is beginning to happen, but it makes everything much harder for the vendors. The underlying mechanisms of nomadic puting and munications must supporttraditionally understood requirements of mobility, portability,and wireless munications, such as data transport, user authentication and privacy. But the problem is that the user might not be aware of potential threats. There is also a problem of hidden affordances.In 1995, L. Kleinrock [2][3] proposed a definition of Nomadic puting “Nomadicity may be defined as the system support needed to provide a rich set of puting and munication capabilities and services to nomads as they move from place to place in a transparent, integrated and convenient form”. He proposed the desirable characteristics for nomadcity like: Location, Motion and Computingplatform.In 1998, Kristoffersen et al. [7] presents three kinds of modalities of mobile (1) work (2) visiting (3) traveling and wandering. Visiting is working in different places in a temporal period of time. For example Director of an organization watches several aspects of university at temporal duration. Traveling is working while traveling in a vehicle,such as an airplane or a train or a bus. Wandering is workingwhile being mobile locally local, physical mobility of users for example a distributed and mobile team of IT supports staff.In 1999, Sun Microsystems Laboratories [8] presents Java 2 Micro Edition (J2ME) to resolve the problem that faces in mobile puting. it provide Enduser hardware appliances and services to stable base for new applications and services to build onto Hardware makers to develop standardized applications for their devices and Users can dynamically download and install fullfeatured applications on a widerange of devices through mobile.In 2001, Riggs, Taivalsaari and VandenBrink [11] proposed about business and consumer use. They proposed solutions for Java 2 platform and J2ME, for development of mobile applications. Current applications for mobile devices using J2ME are present and possible future mobile applications are addressed for developer to take advantages of J2ME for future mobile applications.In 2002, Julio Sanchez and Maria P. Canton [13] proposed a system that covers the most important required factors in home automation system such as flexibility, security, easy to use, the ability to feedback information to the client function presented system uses the J2ME language to program the client mobile which sends information to the service mobile and this controls the operation of the appliances via a PIC microcontroller which connected to it and programmed in such a way that introduces the main characteristics of the system. In other words, it is the control of home appliances by means of a puter. Then the concept is developed to a modern one, it is talking about the interaction of technologies and services applied to different buildings with the purpose of increasing security, fort, munication, and energy saving.In 2001, I. Foster, C. Kesselman and S. Tuecke [12] proposed Grid puting which is the bination of puter resources from multiple administrative domains applied to a mon task, usually to a scientific, technical or business problem that requires a great number of puter processing cycles or the need to process large amounts of data. One of the main strategies of grid puting is using software to divide and apportion pieces of a program among several puters, sometimes up to many thousands. Grid puting is distributed, largescale cluster puting, as well as a form of networkdistributed parallel processing.In 2003 Margaret H Dunham et al. [14] Proposed about spatial data mining and knowledge discovery which has been for twenty years. It es through a course from simple putation to plex analysis and application. Now, spatial information technologies and network technologies have changed rapidly. It is not for mining and knowledge discovery study field, but also isolated information islands in spatial information and knowledge organization and management, so new approaches have been thought in the recent years.In 2004, L. W. McKnight et al. [15] proposed about Wireless grid. It is a wireless network based virtual system that consists of wirelessconnected different types of electronic devices and puters. It is defined as adhoc, distributed resource sharing network between heterogeneous wireless devices. By wireless links, a wireless g