The consumer market for personal breathalyzers has become a multi-million business over the past decade. There is a proliferation of brands and models at price points from a few dollars to several hundred dollars available on the internet, in retail stores and in specialty shops.
The vast majority of the less expensive consumer alcohol breath testing devices for sale use an alcohol sensing technology called "semiconductor sensing," also known as "semiconductor sensors." Semiconductor breathalyzers have been aggressively marketed to consumers and owing, in part, to their low pricing have become popular.
Semiconductor breath alcohol sensing technology is acceptable for detecting the presence of alcohol in human breath but has never been approved or cleared by any U.S. regulatory agency including the Department of Transportation (DOT) and the Food and Drug Administration (FDA) for the accurate measure of breath alcohol content (BAC).