A small tubelike unit that fits snugly up one nostril, it detects the amount of alcahol, much like its bigger brothers. The electronics trigger a bright flashing red LED housed in the unit when triggered by an "Unsafe to drive" limit, thus providing a "Red Nose" alert for other members of the public.-- Micky Dread, Nov 28 2002 UUUmmm, I don't know how to do that?-- Micky Dread, Nov 28 2002 What make this honk when over the top ?-- skinflaps, Nov 28 2002 Oh! you mean a "goose like" honk, flashing nose and honking like a goose, Sensational...-- Micky Dread, Nov 28 2002 random, halfbakery