INFORMATION RECORDING CARD, INFORMATION READING DEVICE, AND INFORMATION READING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an information recording card, information reading device, and information reading method to obtain high security effect with a simple configuration.

SOLUTION: The information recording card has a recording section made of a thin film magnetic body, and having a plurality of magnetized domains for generating magnetization vertically to the film surface arranged in a two dimensional manner to record the information corresponding to the direction of the magnetization of each magnetized domain. The card reads the information recorded on the recording section by radiating linearly polarized light beams to a plurality of the magnetized domains included in the information recording card to transmit the component in the preset vibration direction of the light transmitted or reflected through or on each magnetized domain respectively so that the component of the transmitted light in the vibration direction corresponding to each magnetized domain is individually received and signal processing is carried out by using the intensity of the received light.

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