This small plugin turns your smartphone into a breathalyzer. After blowing in the illuminated opening the accompanying app shows you whether you are still legally allowed to drive. If your blood alcohol level is too high the app comes up with other transportation options such as cab services and public transportation.
The tiny, keychain sized device is easy to carry with you and because of its portability it takes the guesswork out of the still too common “I think I can still drive” situations. Apart from measuring your current blood alcohol level it also it predicts the time it will take before you are back to zero alcohol. Breathometer is well tested and FDA approved