1. An iris image capture device, comprising: an optical arrangement that utilizes Wavefront Coding phase modifications to produce an optical iris image of a user iris in a field of view such that a PSF of the optical iris image has an identifiable shape; a detector for detecting the optical iris image and for converting the optical iris image into an electronic data signal; and an iris recognition processor that processes the electronic data signal from the detector to identify a position of the user iris by locating the identifiable shape in the field of view.