two persons with options linked with collective action it can for instance ask the users to specify their relationship friends coworkers etc fig1 d one person and one object are visible a halo appears around the object proposing some actions that the user can do with this object for instance if the sleeve of a music cd is presented recognized with fiducial markers or object recognition methods the system can suggest to play it to add it to the database etc fig1 e for that purpose the interactive device contains a database of predefined objects and related commands specific to this object contextual pop up menus augmented reality these are just examples on how the halo system adapts to the context in some sense the system can be interpreted as a novel form of contextual pop up menus linked with individual and entities in the physical world therefore it is adapted to many augmented reality like applications where additional information or graphical animation are presented on top of real objects and persons memory artificial intelligence system such kind of interface can interestingly be associated with a database machine learning system permitting to log the user 39 s interactions and to create individual profiles of use for instance associated with face recognition algorithm the system can learn to recognize users store into the database the data related to the user and therefore adapt the interface depending on the current user by learning about how it is used the interface system can optimize the way it interacts with its users unused functions can be temporarily disabled.