Your smoking habit could be busted with one simple test

Many people lie about their smoking habits to their doctors (Why?!) but a simple test could be coming to your MDs office can can catch a secret smoker in his or her own lie. It's called the pulse cooximeter and it can detect abnormal carbon monoxide levels in your body simply from being clipped into your finger tip.

What do you think about this device? An invasion of privacy or a necessary measure? I think it's a great invention, because a doctor can adequately help a patient if they don't know whether the patient smokes or not -- and it could potentially save lives.