'It’s helping save lives' | Vehicles will soon have built-in sensors to prevent drunk driving The alcohol sensing technology is designed to detect blood alcohol levels by sampling the air or examining the driver's finger when starting the ignition. Author: Bob Segall Updated: 12:14 AM EDT July 27, 2021 INDIANAPOLIS — Researchers say they've figured out a way to practically eliminate drunk driving. They have developed alcohol detection sensors that will be soon be launched on American roads for the first time. And within a few years, the technology could be ready to install in the vehicles of millions of American drivers. But are American drivers ready for the technology?