Intrinsically safe operation of a communication device and a peripheral device coupled thereto is provided. The method includes presenting a machine input fields requesting parameters associated with actuators and mechanical elements, and presenting product input field requesting desired product properties. The directory revision number may also be used to rebuild the directory. The imaging apparatus 51 for acquiring an image of an identifier such as a barcode or text on an optical medium such as a disc 2 comprises a bottom section 3 and a top section 4.