First night used this kept a friend from leaving my house and he was insistent that he was fine until the test revealed .07 result. Kept someone off the road that they thought they were fine and he lived about 4 miles away. And always fun to use for just novelty of seeing how drunk people are. Buy this and save a life
I bought this a few months ago for my boyfriend who in his past has had two DUI's and now has an interlock in his car. I wanted him to be safe and to be able to pass every single time he had to start his car. The interlock won't start unless the person is .025 or less, and with this BAC he can blow .024 and pass. I am also a bartender and there are times I feel this is necessary for me, so I just bought one for myself. I might even buy for my mom and brothers. It is just definitely a good idea to be able to know when you're at that limit. I highly recommend this product for the quality and price.