Optical comparator and method to compare biometric information

摘要

This invention relates to an apparatus for optically comparing data stored in a holographic medium with data stored in a holographic database. The apparatus includes a beam emitter and a holographic database. The beam emitter emits a reference beam onto the holographic medium and projects a holographic image that corresponds to the data stored in the holographic medium. The holographic database is configured to receive the projected holographic image and to compare it with holographic image data contained in the holographic database. When a match is found or when all of the objects' holographic images on the database have been compared, the database emits a result signal.