Abstract: A method of preventing a subject communication device 1021 . . . N from accessing a resource when it is determined to be counterfeit. The method involves delivering the web page component to a subject communication device 1021 . . . N in response to a request. The web page component is adapted to retrieve actual values of a plurality of attributes from the subject communication device 1021 . . . N. Reference values of the plurality of attributes are retrieved from a device property store 110 and the method determines that the subject communication device 1021 . . . N is counterfeit when at least one of the actual values of the plurality of attributes is different to the reference value of that attribute.

Abstract: An interface generator 6 generates a user interface for a mobile communication device 2 by providing, at step S2, a menu of functional components to a website owner 5 and receiving an indication of which of the functional components are selected for inclusion in the user interface from the website owner, at step S3. When the interface generator 6 receives a request for the user interface from the mobile communication device 2, at step S7, it delivers the user interface to the mobile communication device, at step S8, for display by the mobile communication device 2. The generated user interface includes the selected functional components and selection of a functional component included in the displayed user interface by a user of the mobile communication device 2 causes the mobile communication device 2 to carry out a task.

Abstract: A method of determining that a subject electronic device 1021 . . . N is counterfeit. The method involves delivering the web page component to a subject device 1021 . . . N in response to a request. The web page component is adapted to retrieve actual values of a plurality of attributes from the subject device 1021 . . . N. Reference values of the plurality of attributes are retrieved from a device property store 110 and the method determined that the subject device 1021 . . . N is counterfeit when at least one of the actual values of the plurality of attributes is different to the reference value of that attribute.