If you’ve ever been pulled over by a cop on suspicion of DUI, chances are you have been asked to submit to a breathalyzer test. This small device presumably (magically?) somehow measures the alcohol content in your blood by analyzing your breath, and whatever it reveals may influence the officer’s decision whether or not to arrest you.
But what, exactly, is the breathalyzer measuring? Is the reading accurate? What are your rights if an officer asks you to blow into a breathalyzer? Are these devices a truly effective deterrent against DUI? Let’s take a closer look at this technology—how it works, how it is used in real-life contexts with police, and what the future may hold as the technology develops.
How Alcohol Is Detected through Your Breath