The invention relates to signalling in broadcast and multicast environments. The sealing plate includes a gas release valve and an electrolyte pour hole and further includes, on the front face, a concaved flat face having an identification code. The outer panel has an exterior surface and an underside surface, and the inner panel is located adjacent to and along the underside surface of the outer panel, but spaced apart from the outer panel. The loyalty program instrument may include a magnetic striped card, a smart card, a printed ticket, a room key, a cell-phone or a portable computing device. A bottom portion is formed on a bottom of the cylindrical portion. A method for making a housing is also provided.