Contextual information from contexts

A system for context based access control and privacy control for an online social network, the system comprising:

• an electronic database configured to store:
• a plurality of user records, each of the plurality of user records comprising a unique user identifier associated with each user and a list of unique context identifiers associated with the user;
• a plurality of context records, each of the plurality of context records comprising a context name representing an area of social interaction and a unique context identifier associated with each context and a list of unique user identifiers of users granted access to each context;
• a plurality of content records, each of the plurality of content records comprising content data posted by a user, wherein each of the plurality of content records is associated with the unique user identifier of the user and the unique context identifier associated with the context;
• an electronic processing system in communication with the electronic database and the online social network, the electronic processing system configured to:
• generate a booklet comprising a first content owned by a first user, the first content associated with a selected first context owned by the first user;
• grant visibility to the first content to a first list of users associated with a unique context identifier of the selected first context such that the first list of users can view the first content on their respective display devices;
• receive a request from a second user to contribute a second content owned by the second user through a selected second context owned by the second user, the second content being a child-content of the first content owned by the first user;
• and
• grant visibility to the second content to a second list of users, the second list of users determined by applying an intersection operator (∩) to a list of users associated with the selected second context and the first list of users such that the second list of users can view the second content on their respective display devices.

A computer-implemented method for context based access control and privacy control for an online social network, the method comprising:

• storing in an electronic database:
• a plurality of user records, each of the plurality of user records comprising a unique user identifier associated with each user and a list of unique context identifiers associated with the user;
• a plurality of context records, each of the plurality of context records comprising a context name representing an area of social interaction and a unique context identifier associated with each context and a list of unique user identifiers of users granted access to each context;
• a plurality of content records, each of the plurality of content records comprising content data posted by a user, wherein each of the plurality of content records is associated with the unique user identifier of the user and the unique context identifier associated with the context;
• using an electronic processing system in communication with the electronic database and the online social network to:
• generate a booklet comprising a first content owned by a first user, the first content associated with a selected first context owned by the first user;
• grant visibility to the first content to a first list of users associated with a unique context identifier of the selected first context such that the first list of users can view the first content on their respective display devices;
• receive a request from a second user to contribute a second content owned by the second user through a selected second context owned by the second user, the second content being a child-content of the first content owned by the first user;
• and
• grant visibility to the second content to a second list of users, the second list of users determined by applying an intersection operator (∩) to a list of users associated with the selected second context and the first list of users such that the second list of users can view the second content on their respective display devices.