A system and method for advertisement sponsored content distribution. Also disclosed are cells and batteries including the electrolyte. The openings of the first and second layers are aligned before forming the channels. The plane of pivotal movement is either the same as the plane defined by the arm and the shaft, or is perpendicular to the arm-shaft plane. The method includes one or more light field cameras recording image data of a substrate during printing to the substrate and a control unit processing the image data received from the one or more light field cameras to identify defect areas in the substrate. A retainer member is configured to be inserted into the retainer slot of the sensor shaft of the rotational sensor and to include a protruded portion protruding from the second surface of the retainer slot into the interference slot of the rotational member.