Friends create iPhone app to estimate blood alcohol - The Tennessean
 AppAdvice | Friends create iPhone app to estimate blood alcohol The Tennessean He said the app uses the iPhone's camera and scans a person's eyes to find the ?horizontal gaze nystagmus,? which is the involuntary eye jerking that occurs when a person is intoxicated. ?It takes a series of photographs to detect and analyze HGN, ... Before You Head Out To The Party, Equip Your iPhone With BreathalEyes |