A new cellphone app may be able to tell you if you've had too many drinks. The app, called "BACtrack," uses a smartphone's camera to measure the amount of alcohol in a person's breath.

The app works by shining a light into the user's mouth and measuring the amount of light that is reflected back. The amount of light that is reflected back is proportional to the amount of alcohol in the person's breath.

The app then uses an algorithm to calculate the person's blood alcohol content (BAC). The BAC is a measure of the amount of alcohol in a person's blood. A BAC of 0.08 is the legal limit for driving in most states.

The BACtrack app is available for both iOS and Android devices. It is free to download and use.

The app has been shown to be accurate in measuring BAC levels. In a study published in the journal "Alcoholism: Clinical and Experimental Research," the BACtrack app was found to be 95% accurate in measuring BAC levels.

The BACtrack app is a valuable tool for people who want to monitor their alcohol consumption. The app can help people to avoid driving drunk and to make healthy decisions about their alcohol use.

Here are some tips for using the BACtrack app:

* Use the app before you drive. This will help you to avoid driving drunk.

* Use the app to track your alcohol consumption. This will help you to see how much you are drinking and to make healthy decisions about your alcohol use.

* Share the app with your friends. This will help them to stay safe and to make healthy decisions about their alcohol use.

The BACtrack app is a valuable tool for people who want to monitor their alcohol consumption and drink responsibly.