This is kind of cool. Raise your hand if you've ever gone on a lengthy road trip and found yourself falling asleep while driving. I know I have. Just last month I drove halfway across the country, and I caught myself dozing off on a number of occasions.
But there's an iPhone app out that promises to make that a thing of the past. It's called Drive Awake, and it uses eye-tracking technology to keep tabs on you while you drive. Close your eyes for too long, and the app will emit a shrieking audible alarm...