Patent ID: 8869296

Claim:
A method, comprising: storing user information associated with a first user, the user information including address book information, calendar information and at least one of location information or presence information; storing access control information, the access control information identifying criteria for allowing parties other than the first user to access the user information, wherein the access control information includes at least two of time information indicating when the parties are authorized to access at least some of the user information, location information associated with the first user's location, or requestor identifier information identifying the parties, receiving, from a first party, a request for access to at least a first portion of the user information, wherein the first portion of the user information includes at least one of the address book information or the calendar information; determining, in response to the request and based on the access control information, whether the first party is authorized to access the first portion of the user information; and providing access to the first portion of the user information, in response to determining that the first party is authorized to access the first portion of the user information, wherein the determining further comprises: performing an implicit authorization determination by accessing the first user's address book or contact list to determine whether the first party is authorized to access the first portion of the user information.