Abstract: A user directed advertisement network includes an ad server having a database for storing advertisements from one or more vendors, and a broker configured with software to receive and store claims including information of advertisement preferences of a principal, and based upon at last one claim to provide to the principal one or more advertisements stored on the ad server that relate to the preferences of the principal. An agent used by the principal and configured with software to provide the claims including the information of the advertisement preferences to the broker, and to receive the advertisements from the broker.

Abstract: A brokered information sharing system including a primary broker configured with software to store cards of a principal, to transmit the cards when requested by the principal, to authenticate the principal, and to provide a master authentication of the principal to at least one issuing party. A selector is used by the principal and is configured with software to provide authentication of the principal to the primary broker, and to request and receive cards from the primary broker.