Abstract: A point of sale system is provided that can selectively control operation of one or more peripherals. The system includes a payment terminal with a reader for an electronic payment card and a port for communication with the peripheral. The system further includes a peripheral with a reader for the electronic payment card, and a monitor with a first port for coupling to the payment terminal and a second port for coupling to the payment device. The monitor includes a microcontroller providing for communication between the payment terminal and the peripheral, and the monitor determines an operational status of the peripheral. The monitor causes a redirection of communication as necessary based on the operational status of the peripheral.

Abstract: A method of forming an environmentally sealed transponder type circuit wherein the circuit components are mounted on a lead type substrate frame, the components are encapsulated in a plastic housing in a plastic molding process so that the housing is supported in the frame only by a plurality of the leads, and then severing the leads at the periphery of the housing to provide a leadless package. The frame may be formed of a conductive material, an insulating material or as a printed circuit board. A novel printed circuit type lead frame whereby a coil of the circuit may be mechanically attached and directly secured to the frame is additionally disclosed.