Patent ID: 8484310

Claim:
A method for supplying advertising content, the method comprising: transmitting content data from a content server to a user device of a user, the content data comprising metadata identifying an advertisement service; receiving at the advertisement service a data request for advertisement information from the user device in accordance with the metadata, the data request comprising identifier information identifying the user in a manner recognized by an authentication service, where the identifier information does not identify the user to the advertisement service; in response to the receiving at the advertisement service, transmitting an authentication request by the advertisement service to said authentication service, the authentication request comprising the identifier information from the data request and network layer information; receiving an authentication response at the advertisement service from the authentication service, the authentication response comprising user information which does not comprise personal identification of said user; and in response to the receiving an authentication response at the advertisement service, transmitting advertisement information to the user device in accordance with the user information, where no user information is transmitted to the content server.