A breath alcohol measuring device is provided with a pressure sensor for detecting a signal representative of the breathing air flow and with an electrochemical sensor for detecting a signal representative of the alcohol content in the breathing air and with evaluating means for processing the signals and for determining the breath alcohol concentration. Keywords include: media, internet content, BIVL subscription and device infrastructure. In an embodiment, at least one of said conduits is coiled. An arm moves a cartridge from the hub to the chamber. The disclosed method attenuates or eliminates an over-erase condition in the non-volatile memory device.