These used to be very common in bars, especially in college towns. It actually works by measuring the alcohol contained in the air and turning it into electricity.
- Fact 1: In 1910 New York became the first US state to establish laws against drunk driving.
- Fact 2: Early drunk driving laws defined intoxication at 0.15 blood alcohol concentration, nearly twice the legal limit in the US today.
- Fact 3: Drunk driving arrests in the US peaked in 1983, with 1.9 million per year.
- Fact 4: The modern breathalyzer was invented in 1954 by Dr. Robert Borkenstein, a captain with the Indiana State Police.
- Fact 5: The inspiration for the breathalyzer may have come from Emil Bogen, who wrote a paper in 1927 detailing how he measured air during a football game for alcohol content.