Connect with us


BreathalEyes Measures Blood Alcohol Content (BAC) Through iPhone Camera



New Years Eve is tomorrow night, and it would not be surprising if you’ve planned a night out that includes drinking with your friends. Towards the end of the evening, one them wants to drive home, but you’re afraid they might’ve had too much to drink. What to do? Just pull out your iPhone & run a quick test with the BreathalEyes app.

Using a variety of patent pending image tracking technologies, the BreathalEyes app is able to measure a users Blood Alcohol Content between 0.02 and 0.17%.

BreathalEyes looks for the presence of Horizontal Gaze Nystagmus (HGN) in the eye to determine their approximate Blood Alcohol Content. Unlike BAC calculators, BreathalEyes can be used at a moment’s notice. And, unlike a breathalyzer, it can be used multiple times in a row without any waiting. Simply frame the user’s eye on the screen and have them look to the side. Tap the screen to begin the test and a few seconds later BreathalEyes will tell you the user’s approximate BAC. (Margin of error +/- 0.02)

Do not be fooled. There are many fake breathalyzer apps available today. Only BreathalEyes uses science to determine real numbers!

BreathalEyes is intended for use on intoxicated individuals only, therefore it will not work unless you have been drinking. For best results, make sure that your iPhone’s lens is clean & that the subject has removed all eye ware. All results are private and no data is ever recorded or retrieved from your phone by BreathalEyes.

BreathalEyes is optimized for the iPhone 4 and higher, and is available worldwide in the iTunes App Store for $0.99.



  1. Francesco

    December 31, 2011 at 2:59 pm

    Interesting. I think that I would still feel hesitant to trust its accuracy though because you just never know. When in doubt, just don’t drive.

    • Aaron

      December 31, 2011 at 5:52 pm

      agreed – but still seems like a great thing try out at a party!

  2. Rich Lavene

    January 9, 2012 at 3:17 pm

    Yeah, seems more like a party trick…maybe a little more reliable then a Magic 8 ball but…

Leave a Reply

Your email address will not be published. Required fields are marked *

Notify me of followup comments via e-mail.