A method of performing iris recognition from at least one image, comprising: using a plurality of cameras to capture a plurality of images of a subject where at least one of said images contains a region having at least a portion of an iris; and processing at least one of said plurality of images to perform iris recognition; identifying the subject by the iris recognition; determining the security level of the subject from the subject's identity; and modifying the display of a computer system in a secure information facility based on the security level of the subject.