I'd like to add something to that.
As it stands right now, if they had the passive detection device, it could detect alcohol, the sense or smell of alcohol. Then they would be required to blow into it like a Breathalyzer. It's called an ASD, which is the breath concentration. They're given a test, and then they are given a second test. If that comes up as either false or positive, they are given the opportunity to have a second blow into a machine to determine whether the reading is correct or not. It's not just one test.