Context-Based Service Access for Train Travelers
We present an access control architecture that restricts access of train and tourist office services to travelers that are really on the train. For this purpose location and velocity information are used as alternative authentication and authorization credentials. The ambient intelligence of our transparent access control mechanism manifests itself as a pool of verification methods of increasing strengths. These verification methods are based on the proximity principle and relational contextual history information about WLAN access points, fellow train travelers, the train itself and its conductor or driver.
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