Automatic transaction device, biometric authentication unit, and biometric authentication method

Abstract

When authentication failures are caused by permanent errors caused at time of registration of biometric information, such as forgetting placement of fingers at time of registration or registration being carried out in an inappropriate state, or from temporary errors on the part of the person concerned, such as injuries to fingers or foreign matter or filth adhering to fingers, the likelihood that authentication will be determined to fail even after retrying the authentication is high. If the match degree of the biometric information is low, remains insufficient even after performing estimated cause and corrective steps in placement of fingers, and the cause of the lack of improvement lies with an error at time of registration, personal identifying material which the user supplied at time of registration of biometric materials is queried, and a re-registration of biometric information and transaction process carried out. If the cause of the lack of improvement lies with a temporary error on the part of the person being identified, the problem cannot be resolved at time of transaction, and thus, a migration is carried out to a restricted transaction after scanning the personal identifying material and querying and verifying same.

Description

technical field [0001] The present invention relates to an automatic transaction device, a biometric authentication unit for biometric authentication, and a biometric authentication method. Background technique [0002] In financial institutions, biometric authentication using biometric information such as fingerprints, iris, and finger veins is used as a method of identity verification in transactions at automatic transaction devices (hereinafter referred to as ATMs). Biometric authentication is a highly secure method, but there are cases where the user's own authentication fails and transactions cannot be performed. [0003] As a countermeasure against the above, in the case of the biometric authentication system described in Patent Document 1, when the degree of consistency of the biometric information is insufficient, a transaction (hereinafter referred to as "transaction" with a limited amount or a part of the number of transactions) is performed according to the level ...

AI Technical Summary

Problems solved by technology

[0010] However, in the case of the conventional biometric authentication system, it is impossible to grasp the real-time change of the matching degree of the biometric information and to take appropriate improvement measures.

In addition, if you forget how to place your finger when registering biometric information, or register in an inappropriate state (permanent cause of failure during registration), or if your finger is injured, or foreign matter or dirt is attached to your finger If authentication fails due to other reasons (temporary personal reasons), even if biometric authentication is performed again with the same finger, the consistency of biometric information may not increase, and repeated authentication may fail.

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