The automated IVR uses algorithms and sophisticated speech recognition (computerized) to engage smokers on the telephone; gather information, provide reinforcing messages and triage them to a study nurse for call-back within 2 working days if either the smoker or nurse identify help is required. The technology recognizes the smoker's verbal responses, documents them and thereby assists in guiding further follow-up. IVR is a low-cost, high-yield way of contacting smokers when they would not ordinarily be contacted.