| 摘要 |
PURPOSE:To prevent the misuse of a personal collation system through a subject by collating the personal information supplied via an input means for personal information with the personal information stored previously in an information collating dictionary through an information collating means after confirming that the subject is equal to a living body. CONSTITUTION:A living body detecting means 4 consists of a living body detecting optical system containing the short and long wavelength optical sensors 41 and 42, a comparison voltage generating circuit 43 which produces automatically the comparison voltage corresponding to the output voltage of the sensor 42, a living body discriminating comparator 44 with compares the comparison voltage with the output voltage of the sensor 41 and a touch detecting comparator 45 which detects a contact between a finger 12 and the sensor 42. Here a fact that a subject is a living body is confirmed by the means 4 utilizing the pressure dependance showing that the reflection factore has a big change with pressure of the finger 12 in a <=580nm visible light area which is proper to the human skin. Then a fingerprint supplied from a fingerprint sensor 1 is collated with a fingerprint stored previously in an information collating dictionary 2.
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