I'm voluntarily using bactrack in a current custody dispute to put allegations of alcoholism to rest. I must say it works really well, almost too well! The only positive result I had was when I placed my bactrack device in the door of my vehicle directly on top of a small bottle of cologne. After retrieving the device and testing, I was shocked to receive a .012% reading. I immediately tested 2 more times and they both came back positive, I then had my 10 year old test because at that time I could not understand how it was reading positive. He also tested positive with the exact same result. I then had my girlfriend test, she tested negative. Then I tested again and it came back negative. I then had my 10 year old test again and it came back negative (9 minutes after his positive result. My negative result was 11 minutes after my previous positive result. I had everyone in the house blowing in this thing trying to figure out what was going on. After a couple phone calls and some research, I realized that my cologne bottle had cause these false positive results. My biggest gripe is not the "false positive" result as that actually shows how precise this product is. It's the fact that when I called to explain this, Bactrack told me that they were no doubt "false positives" as the body could not metabolize alcohol within 9-11 minutes; however, they will still show as positive test results and that there is no way for them to correct the results although we had negative test results immediately following the positive ones. There surly has to be a better way to go about a situation such as this. Furthermore, there have been several instances of me taking a test and receiving an email and a text message that proves the test; however, the app itself doesn't show the test on the calendar. I'm voluntarily taking this test 3X's per day to prove that I am consuming no alcohol. False positives that cannot be corrected and failure to provide accurate test times are a problem.