Self-Testing for Your Guests Alcohol Alert is state-of-the-art technology for self-monitoring and is easy to use. Your guest just blows through a straw into the machine, and the result is a numerical readout of current blood alcohol content (BAC), and a verbal warning if it indicates potential impairment. Nobody says they want to drive impaired, but most people can’t tell on their own when they’ve had too much. Alcohol Alert doesn’t tell a person whether they can drink or not, it tells them when, for sure, they shouldn’t drive. With this information they can act responsibly, and have their spouse or friend, who is not impaired, drive them to where they need to go. It’s an idea whose time has come