1. A system for determining the identity of a subject while the subject is walking or being transported along in an essentially straight direction, the two dimensional profile of the subject walking or being transported along forming a three dimensional swept volume, without requiring the subject to change direction to avoid any part of the system, adapted to acquire one or more biometrics of the subject and determine if the acquired biometrics match corresponding biometric data stored in the system, the system comprising one or more cameras and one or more infrared illuminators, wherein the cameras are positioned above, next to, or below the swept volume; the illuminators are positioned above, next to, or below the swept volume; and the illuminators are either strobed or are scanned over an area of biometric acquisition.