Patent ID: 7216231

Claim:
A method of establishing a secure communications link between a user communications device and a first service communications device, the method comprising the steps of: exchanging a first identification key via a first communications protocol between the user communications device and a selected one of the first service communications device and a second service communications device; generating, based on the first identification key, a second identification key for use during subsequent communications sessions between the user communications device and the first service communications device via a second communications protocol; storing the second identification key in a first storage means of the user communications device and in a second storage means of the first service communications device; characterised in that the method further comprises the step of authenticating the first communications protocol using a pre-configured trust relation between the user communications device and the corresponding first or second service communications device; and characterised in that the step of exchanging the first identification key further comprises the steps of establishing a communications link between the user communications device and the second service communications device, and generating and storing in a third storage means of the user communications device an identification code related to the first identification key; the method further comprises the step of communicating the first identification key and the identification code from the second service communications device to the first service communications device; and the step of generating the second identification key further comprises the steps of transmitting the identification code from the first service communications device to the user communications device, and, on the basis of the identification code, retrieving the first identification key from the first storage means.