Or just buy your own breathalyzer (i.e. Backtrack B70 or whatever floats your boat), go out drinking, see how much you can have and what your BAC is after a certain amount of various drinks and test your own tolerance. I have my own breathalyzer and keep my BAC no higher than 0.03 before I drive anywhere. Oh, and eat while you drink and drink 1 water per drink or shot.
its a story about a guy making something for himself and friends, a unique invention. Now people are getting all mad about it like its commercially available or something and complaining like a consumer.
Wouldn't it be better to put a removable chip in a slot in the base of the glass? the bartender could just slip your chip into a reader that sets the alcohol level for that drink and it tracks how fast you drain it. each new drink the chip gets inserted into the new glass. The light effect would still be there and warn you when you have had enough. That would actually be a very marketable idea i would think. As long as the chips don't get mixed up between customers which is very easy to have happen.