I just know that there are going to be swathes of folk saying "don't drink and drive", but, ignoring those for the moment, does anyone have any experience of personal breathalysers?
There seem to be a number of different technologies used and I'm guessing that those that use fuel cells are probably better. I'm not too concerned with having one that's stable over months/years, more one that will give me reasonably accurate results for long enough for me to determine my own safe limits.
Tim