摘要：Ubiquitous computing only allows services of fixed or local area and it just provides services without status information of the device upon user request. Thus, it is difficult to react immediately with users changes. Since urban computing is on higher system instead of ubiquitous, it can usually provide users the organic behavior with reference from devices physical states information. Also, it provides the services by considering the user’s devices and environments near user’s location. That means the generated context during movement can be detected by sensor. Through this information the system guesses the user’s next move and the number of context increases upon user’s movement. Therefore, there are so many users / devices to attack in urban computing. However, existing urban computing is insufficiency to process the security module. Therefore, we suggest the way to secure contents in urban computing.
