Inaccurate
Very inaccurate. I was home drinking MaiTais for several hours.  I could tell that I was drunk.  When I used this device,  it said 0.07. I immediately used it again and it read 0.05...  There is no way I was sober enough to drive.  Thank goodness I was home and not trusting this device to confirm I was fit to drive.
Rating: 1 stars