1. An imaging system for a vehicle, comprising: an infrared source generating an infrared beam along a particular field-of-view in the vehicle; an infrared detector responsive to infrared radiation reflected from objects in the field-of-view of the infrared beam, said detector generating image signals from the reflected infrared radiation; and a processor responsive to the image signals from the detector, said processor including face recognition software that images and identifies facial features of a person to detect a person's face, said processor comparing the detected image of the person's face with stored images, and causing a vehicle operation to be performed if a particular person's face is identified.