Abstract: A method of authentication and synchronous interaction between a secondary device and a multi-perspective audiovisual data stream broadcast on a primary device geospatially proximate to the secondary device is disclosed. In one aspect a method of secondary device includes authenticating the secondary device to a primary device based on a geospatial proximity of the secondary device and the primary device such that the secondary device is synchronizable with the primary device. The secondary device is synchronized to the primary device such that an audiovisual data stream of the primary device is adjustable through the secondary device. An audiovisual data stream of the primary device may be processed such that the audiovisual data stream is accessible through the secondary device. The audiovisual data stream may be an audiovisual data stream of a live performance of an event.