Embodiments of the invention provide for systems, devices, apparatus, methods and computer program products for pre-population of data entry fields in a merchant checkout system. An upstream PORT routing element detects the failure of a forwarding interface for a multicast datastream, where the forwarding interface is coupled to a downstream PORT routing element. In some implementations, a trigger condition may be based on a user geographic location. The material composite is used, for example, for inserting a window comprised of aluminum oxide sapphire into a housing for a light-ignitable thyristor.