BreathalEyes App Detects Drunken (Potential) Drivers

When the cops lift you out of your automobile as well see if you're as well dipsomaniac to drive, they might assessment for Horizontal Gaze Nystagmus (HGN) before they tase you to the ground. HGN is a herky-jerky transformation of the eyes, and is a of a few margin seriousness tests in use by military to see if your blood ethanol turn is as well high.

And now, of course, there's an app for that.

BreathalEyes uses the iPhone 4's camera to discover a insufficient of "smooth pursuit." That is, the theme is told to look as far as probable to a side and the camera watches for fast, contingent eye movement. It then uses this information to guess the BAC of the testee. The people at the back BreathalEyes have tested it to one side a breathalyzer and found it to be precise in the operation of 0.02% – 0.17% (+/- .02%) BAC.

The assessment requires two people, a of whom needs to be solemn to discharge it. And there's the rub: if a of your friends thinks you're so dipsomaniac that he wants to assessment you, that should be bell enough. You may do not must be obviously take the test.

For idiots, though, who regard that its OK to expostulate after any amount of alcohol, this could be only the thing to discuss it them how reticent they are. In that case, $1 is a minuscule cost to pay.

BreathalEyes – BAC Scanner [iTunes. Thanks, Thomas!]