The BACtrack Vio Smartphone Breathalyzer earned high marks in a review conducted by Popular Science recently.
The October issue of Popular Science features the BACtrack Vio Smartphone Breathalyzer in their Obsessed column, along with a few other cool tech devices they are currently lusting for. Here's what they say:
"The size of a keychain, the Vio is one of the smallest breathalyzers available. It measures blood alcohol content, and even estimates when the level will drop low enough to safely drive."