Ultrahigh speed magnetic resonance imaging equipment is capable of predicting temporal and spatial operation of an object to be imaged and significantly reducing the number of phase and frequency encodings, thereby significantly increasing the imaging speed. Linearly polarized incident light enters a transmissive liquid crystal device, in which oblique incident light is changed into elliptically polarized light. Biometrics based on data provided by these systems are more accurate and robust than using biometrics that include data from only the iris or only the retina from a single eye.