1. An imaging system for a vehicle for use in obtaining information about a person in a vehicle, comprising: an infrared source generating infrared illumination along a particular field-of-view in the vehicle in which the person is expected to be present; an infrared detector responsive to infrared radiation reflected from objects in the field-of-view of the infrared illumination including the person, said detector generating image signals from the reflected infrared radiation; and a processor coupled to the detector and arranged to identify a person by analyzing the image signals and cause a vehicle operation to be performed upon the identification of the person.