Biometric authentication device, fake body judgment device, and biometric authentication method
AssigneeFujitsu Limited
InventorKoichiro Niinuma
Life of this patent
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Abstract
A biometric authentication device includes a fake body judgment unit that judges whether a subject is a fake body by verifying whether a biometric information value that is input from the subject is within a biometric information value range that has been registered in advance; and a biometric information value range updating unit that, when the fake body judgment unit has judged that the subject is a living body, updates the biometric information value range such that a difference between the biometric information value that is input from the subject and an end of the biometric information value range becomes larger.
Claims18
A biometric authentication device comprising:
- a fake body judgment unit that judges whether a subject is a fake body by verifying whether a biometric information value that is input from the subject is within a biometric information value range that has been registered in advance;
- and
- a biometric information value range updating unit that, when the fake body judgment unit has judged that the subject is a living body, updates the biometric information value range such that a difference between the biometric information value that is input from the subject and an end of the biometric information value range becomes larger.
A biometric authentication method comprising:
- judging whether a subject is a fake body by verifying whether a biometric information value that is input from the subject is within a biometric information value range that has been registered in advance;
- and
- updating, when it has been judged that the subject is a living body in the judging, the biometric information value range such that a difference between the biometric information value that is input from the subject and an end of the biometric information value range becomes larger.
A computer readable storage medium containing instructions that, when executed by a computer, causes the computer to perform:
- judging whether a subject is a fake body by verifying whether a biometric information value that is input from the subject is within a biometric information value range that has been registered in advance;
- and
- updating, when it has been judged that the subject is a living body in the judging, the biometric information value range such that a difference between the biometric information value that is input from the subject and an end of the biometric information value range becomes larger.
Dependencies are inferred from the claim text.