http://www.peertopatent.org.au/patent/2006203756/activity A method for accessing a wireless railroad data network (25) includes sensing presence of a rail vehicle on a rail track (12). Determination of rail vehicle presence is used as a primary authentication mechanism to permit temporary access to the wireless railroad data network (25) based on sensed presence of the rail vehicle on the rail track (12). The rail vehicle is permitted temporary access to the wireless railroad data network (25) based on sensed presence and authentication of the rail vehicle. en-us System and method for providing access to wireless railroad data network This application discusses about using train's physical presence on the railway network for the purpose of data access control. Detection circuitry are placed on railway tracks, in order to allow the detection of attributes such as physical location and cruising speed. Information gathered is then transmitted wirelessly, to the authentication system, which in turn grant individual train temporal access based on the detected attributes. Fri, 26 Mar 2010 14:44:02 +1000 http://www.peertopatent.org.au/patent/2006203756/discussion