BACtrack - Vio Smartphone Keychain Breathalyzer for Apple® iPhone® and Most Android Devices - White

This ultraportable BACtrack Vio BT-M2 keychain breathalyzer pairs with your smartphone via Bluetooth connectivity to rapidly estimate your BAC (blood alcohol content) and track results. ZeroLine technology estimates when your BAC will return to 0.00%.
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Best Buy Customer Reviews

Eye-opening to what my BAC actually is! Posted by: from: Los Angeles, CA on Not only is this thing really fun to use when I'm out drinking with my friends (everyone wants to see what their BAC is), it actually has made me a much more responsible drinker. Prior to getting my BACtrack, if I felt fine, and I only had to drive a short distance home, I drove - even though I knew I was probably over .08. Now, I literally haven't gotten in a car after having more than a drink or two because I have a number staring me in the face, reminding me to not be an idiot for the sake of convenience. I also realized that, for the most part, I really had no idea what my BAC actually was (and neither did my friends). We all continually guessed lower, which was a bit scary - we all consistently thought we were in better shape than we were. The "Guess Your BAC" function on the app, while seemingly kind of trivial and game-like, has actually really helped me better gauge my BAC level. Highly recommended for anyone with a lot to lose from getting a DUI (read: anyone who drinks and owns a vehicle). Trust me, your BAC is actually probably higher than you think. Use a breathalyzer to keep yourself out of trouble.

9 out of 13 found this review helpful.

Works with Samsung S5 Posted by: from: Iowa on All you have to do is download app and turn on app, Bluetooth and BacTrack. It immediately connects, which i was surprise how quick it was(5 seconds?) Used it about 8 times, testing after 1 beer, 2 beers...and wife see if it looks accurate. I think its pretty close. For a big guy like me 3 beers in just over 1.5 hours i blew .05...I think i would be closer to .08 or so. but eye opening to see it doesn't take much to be legally drunk...Nice feature to 'guess' your BAC and it also keeps track of how many drinks you have when you blow. Cant comment on battery life, but 1 AAA will not be a problem replace.

5 out of 6 found this review helpful.

It works Posted by: from: Orwigsburg,pa on Used a few times. Checked it with a Intoxilyzer FST PBT and it had same reading

8 out of 9 found this review helpful.

Great product Posted by: from: on Works for accurate bac and is fun to use. Would recommend it

0 out of 0 found this review helpful.

Tiny Breathalyzer works! Posted by: from: on So small and love that it syncs to my is GREAT!!!

0 out of 0 found this review helpful.

Great product Posted by: from: on This is an excellent product. The reading are very accurate. You know if you are sober enough to drive home.

2 out of 2 found this review helpful.

Keeps you out of trouble Posted by: from: san pedro,ca on The device is pretty accurate it does require a few reboots every now and then. I expected that because of the size of the device. I would definitely purchase another one if I ever needed to.

0 out of 0 found this review helpful.

Good for proof of sobreity Posted by: from: on Small enough to carry with you or for your son or daughter for those occasions when you are not sure you are ok to drive. Easy to connect to your phone. Test you, take a screenshot and you have proof you are clear to go.

1 out of 1 found this review helpful.

Not accurate and a hassle to set up Posted by: from: on Setting this up with my samsung phone was a huge hassle. I had better luck with my iphone but it wouldn't always sync together. The software is also really buggy. It crashed multiple times while going through the menu. The vio itself is pretty small and compact. Results were all over the place and I couldn't take it seriously when it came time to actually use it. I think at the end of the day, a serious breathalyzer is probably going to cost you more than the vio and this is simply one of those cases of you get what you pay for. There's really not much else to say because it was a huge disappointment.

2 out of 4 found this review helpful.

Worked for 20 tests Posted by: from: on worked really well at first but after 20 tests the software read a reading when no alcohol was present. Call tech support and they said I may have to either calibrate it. I decided to just return it to best buy.

3 out of 5 found this review helpful.

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