Abstract: A system according to an embodiment of the invention provides a means whereby a user or user device may be authenticated by an identity provider. The authentication may provide a trust relationship between the user and a service provider. An IdentityCard, a virtual version of traditional ID cards seamlessly expands the end user's ID card experience and related services to a personal device, like a mobile station or a Personal Digital Assistant (PDA), as well as to the Web browser.

Abstract: The present invention concerns a method for transmitting application packet data via a first packet data network between a terminal and a second packet data network, said application packet data being transmitted using an application protocol operated on top of a protocol stack, said protocol stack comprising plural individual stacke protocol layers adopted for said transmission within said first packet data network, wherein said application packet data are addressed to the terminal and distinguishable according to a service type implemented for said terminal using said application, the method comprising the steps of: detecting said service type, and dependent on the transmission direction of said application packet data, removing and/or adding at least one of said plural individual protocol layers for a specific one of detected service type. The present invention also concerns accordingly adapted terminals and network nodes.

Abstract: A system according to an embodiment of the invention provides a means whereby a user or user device may be authenticated by an identity provider. The authentication may provide a trust relationship between the user and a service provider. An IdentityCard, a virtual version of traditional ID cards seamlessly expands the end user's ID card experience and related services to a personal device, like a mobile station or a Personal Digital Assistant (PDA), as well as to the Web browser.