A gateway (1) interfaces between application providers (APs, (4)) and at least one aggregate AP (3) which in turn is linked to multiple APs (4). The gateway (1) manages cascading of access control rights by the APs (4) to reflect links via aggregate APs (3). On the other side the gateway (1) is linked...http://www.google.es/patents/US7684418?utm_source=gb-gplus-sharePatente US7684418 - Service access gateway
