The size of an electronic display is increased when display panels are slide-out from a stack beneath the top display panel. The shared-secret key is unique for every node within the communication system and is known only to the node and a server. At the other end of the housing a connection element is provided for transmitting torque to a workpiece. The gate is formed over two of the multiple fins, the wordline is formed over each of the multiple fins, and a bitline contact is formed adjacent at least one of the multiple fins. The device can take the gas entrained powder from between one to four hoppers and split the flow into eight tubular lines which feed the powder delivery nozzles of the DLF system. In addition, or in the alternative, the heatable glass substrate may help reduce the amount of moisture that otherwise could accumulate on the luminaire or lighting system.