Abstract: A plastic container has an open end and an imperforate container wall with a base, an outwardly open pocket in the container wall, and an insert disposed in the pocket. The insert preferably is captured in the pocket by blow molding the container wall around the insert. The pocket and insert preferably are disposed in the base of the container opposite the open end of the container, most preferably centrally of the base, and the insert preferably is visible in the container base through an external opening into the pocket.

Abstract: A plastic container has an open end and an imperforate container wall with a base, an outwardly open pocket in the container wall, and an RFID tag in a plastic housing disposed in the pocket. The housing containing the RFID tag preferably is captured in the pocket by blow molding the container wall around the housing. The pocket and housing preferably are disposed in the base of the container opposite the open end of the container, most preferably centrally of the base, and the housing preferably is visible in the container base through an external opening into the pocket.

Abstract: A method of making an identifiable article such as a container or container preform. A molded plastic container or container preform is provided that includes a wall having at least one layer of matrix resin and at least one layer of barrier resin that is blended with an additive. The wall has at least one localized portion of predetermined geometry in which the barrier layer is thicker than surrounding portions of the wall, and within which the additive is discernable under visible or UV light so as to provide a means to prevent use of counterfeit containers.