This was actually my first idea of getting into vending in 2000. I looked into a couple of manufacturers. I can't remember the brand but the guys name was Ken Stoll (going from memory) that owned the company. I liked his machines the best just looking at the quality and design standpoint, but never actually tried his machines.
I spend hours writing a business plan and making logos and a marketing plan. One day I got a call from a friend in a neighboring city that said he knew where one of these machines were placed in a bar (the brand I can't remember but it is the most popular). I loaded up some friends and went drinkingI had two drinks, my friend had many, and my girlfriend (later my wife) did not drink. We headed over to the machine where all of us blew into the machine. The machine said that all of us, including my wife who didn't drink, were over the legal limit of .08. This was not acceptable to me. If I was going to claim to help people to make the call to drive a car I didn't want a machine with questionable accuracy. I never did find out if that particular machine was just defective or if they are all like that. I dropped the idea and moved on to a new one
They are hard to find, but there are used ones around if you are thinking of giving it a try.
JD
One thing to consider for the false positive: how long since the machine had been serviced and had the Breathalyzer re calibrated? Sometimes lack of calibration will do a false positive.


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