JP5422326B2 - Biometric authentication device - Google Patents

Description

  The present invention relates to an apparatus for performing personal authentication using biometric information.

As background art of this technical field, for example, there is JP-A-11-338947. In this publication, “[Problem] Adding identity verification based on personal authentication information such as fingerprints to the current system, providing a service that enables a person to trade without forgetting a PIN or carrying a passbook or card.
[Solution] A user who has registered personal authentication information such as a fingerprint can make a transaction at the financial transaction terminal 4 equipped with a fingerprint collection function even when the user forgets the password or does not carry a passbook or card. In the calculation center, in addition to the usual personal identification number database 2, ledger database 3, collation means 6, transaction execution means 7, personal authentication database 1 and personal authentication means storing name, personal authentication information, account number and personal identification number There are five. In the case of transactions without a passbook or card, the entered name and the collected fingerprint feature are transferred to the personal authentication means 5 and collated with the personal authentication information retrieved by the name. After that, the transaction is carried out by comparing the password with the normal procedure. If you forget your PIN, insert a passbook or card and enter your fingerprint to make a transaction. (Summary).

  Another background art is, for example, Japanese Patent Application Laid-Open No. 2002-14934. The publication discloses "[Problem] Providing a personal authentication system that allows easy customer identification. [Solution] A personal authentication system for identifying a customer, the means for storing a plurality of biometric information of the customer, and the customer Means for reading the plurality of pieces of biological information, means for comparing the plurality of pieces of biological information read with the plurality of pieces of biological information stored, and And a means for sending information that matches the server as information when it matches at least one of them. ”(Summary).

JP 11-338947 A JP 2002-14934 A

  In bank financial transaction systems, facility usage management systems, and the like, biometric authentication devices have become widespread as authentication means for verifying the identity of the person.

  The biometric authentication device searches for one piece of registered biometric data through personal information such as an address and name, or an ID (Identification) card assigned in advance to a user, and mainly uses fingerprints, veins, Biometric information such as an iris is collected using a sensor, and authentication is performed by collating registered biometric data with the biometric information. For example, Patent Document 1 discloses such a biometric authentication device.

  In this authentication, for example, the biometric information of the user is compared with the registered data, the coincidence rate of this data is calculated, and whether or not the user is the identity is determined by whether the coincidence rate is higher or lower than a predetermined value. Is going.

  In addition, as another technique, for example, as described in Patent Document 2, all of a plurality of registered biometric data registered in advance is collated with the obtained biometric information, so that an ID card or the like is obtained in advance. There is a technology that can authenticate without preparing.

  In the above-described technology, it is necessary to prepare an ID card or the like in advance, which leads to a decrease in user convenience. In addition, with regard to a technology that can perform authentication without preparing an ID card in advance, the longer the number of biometric data registered in advance, the longer the time required for authentication or to perform authentication processing at high speed. Has the disadvantage of increasing system complexity and cost.

  On the other hand, in an authentication system using biometric information, it is necessary to maintain sufficient accuracy for accurate authentication. For this reason, it is necessary to accurately obtain the user's biometric information, resulting in a decrease in convenience such as repeated acquisition of biometric information and authentication time. Similarly, in order to maintain sufficient accuracy, it is necessary to increase the amount of data for each registered biometric data, and in the case of collating with many registered biometric data, the authentication time becomes longer.

  An object of the present invention is to provide a biometric authentication device that is easy to use. For example, without performing a search for a plurality of registered biometric data using an ID card or the like, while maintaining a sufficient accuracy while performing verification with the obtained biometric information for a plurality of registered biometric data, It is to provide a biometric authentication apparatus that performs authentication processing at high speed and is easy to use for an authenticator.

The above object can be achieved by the invention described in the claims.
For example, a biometric authentication apparatus according to the present invention includes a biometric information input unit that acquires biometric information of an authenticator, a feature information acquisition unit that acquires characteristic information related to the authenticator, biometric data registered in advance, and the biometrics thereof A biometric data registration unit for storing feature data associated with the data, a biometric data group extraction unit for extracting a biometric data group to be collated from the biometric data registration unit according to the feature information obtained by the feature information acquisition unit, and biometric information input A biometric data collating unit that collates the biometric information acquired by the biometric data and the biometric data extracted by the biometric data group extracting unit, and the biometric data collating unit varies the accuracy of collation. Yes.

  Furthermore, for example, the biometric authentication device according to the present invention has an operation information acquisition unit that acquires operation information of the certifier, and the biometric data collation unit varies the accuracy of collation according to the operation information obtained from the operation information acquisition unit. It is characterized by that.

  In addition, for example, the biometric authentication device according to the present invention includes biometric information obtained from the biometric information input unit and biometric data extracted by the biometric data group extraction unit according to operation information obtained from the operation information acquisition unit in the biometric data matching unit. The primary authentication is performed to verify the authentication, the authentication is authenticated as the registrant in the primary authentication, the certifier performs the following operation, and the operation obtained by the primary authentication from the operation information acquisition unit When the operation information different from the information is input and the priority of the operation information newly obtained is higher than the priority of the operation information obtained by the first authentication set in advance, the operation information newly obtained The second authentication is performed in which the accuracy is varied in accordance with the first authentication and collation is performed using a pair of biometric data and biometric information authenticated by the first authentication.

  According to the present invention, a user-friendly biometric authentication device can be provided. For example, since collation is performed using a plurality of registered biometric data, it is possible to narrow down registered biometric data using feature information without searching for a plurality of registered biometric data using an ID card or the like, and to improve accuracy according to operation information. By performing variable verification, it is possible to provide a biometric authentication device that performs authentication processing at high speed while maintaining sufficient accuracy and is easy to use for an authenticator.

The block diagram which shows the structure of the biometrics authentication apparatus using biometric information and operation information. The figure which shows the example of the biometric data preserve | saved at the biometric data registration part of the biometric authentication apparatus in this invention The flowchart which shows the flow of a process of the biometrics apparatus in this invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, 101 is a biometric information input unit, 102 is a feature information acquisition unit, 103 is an operation information acquisition unit, 104 is a biometric data collation unit, 105 is a biometric data group extraction unit, and 106 is a biometric data registration unit.

  In FIG. 1, the biometric information input unit 101 acquires biometric information such as a fingerprint, a palm print, a vein, a voice, an iris, and a face image from the biometric information of the authenticator using a sensor or the like. The feature information acquisition unit 102 acquires feature information such as gender, height, weight, and the like by using a sensor or the like as a feature of the authenticator. The biometric data registration unit 106 stores a plurality of pieces of biometric data acquired in advance, and the biometric data group extraction unit 105 uses a biometric data from the feature information obtained from the feature information acquisition unit 102, for example, as shown in FIG. Relevant registered biometric data is extracted from the data registration unit 106.

  Here, the operation of the biometric data group extraction unit 105 will be described with reference to FIG. 201 indicates a set of all registered biometric data, 202 indicates a set of male biometric data, 203 indicates a set of biometric data of registrants whose height is 170 cm to 180 cm, and 204 indicates a set of registrants wearing glasses. ing. For example, when the biometric data group extraction unit 105 obtains the feature information that the certifier is male, 170 cm, and wearing glasses from the feature information acquisition unit 102, for example, the feature obtained as shown by 205 in FIG. Thus, the biometric data of the set of all the overlapping portions is extracted, and a smaller biometric data group can be extracted than using the entire registered data for authentication.

  In FIG. 1, the operation information acquisition unit 103 acquires operation information of the certifier device such as pressing a door opening / closing button or pressing a deposit withdrawal button in a bank transaction system. Then, the biometric data matching unit 104 uses the biometric information obtained by the biometric information input unit 101 and the biometric data extracted by the biometric data group extraction unit 105 in accordance with the operation information obtained by the operation information acquisition unit 103, for example, a PC. (Personal Computer) authentication accuracy for login is lower than authentication accuracy for financial settlement by PC after login, with accuracy determined in advance for each operation so that accuracy and convenience are optimal. Perform verification. When the biometric information of the certifier does not match the registered biometric data as a result of the verification, verification is performed on the registration data that has not been verified. At this time, it may be regarded as impersonation due to disguise or the like, and collation may not be performed, or collation may be performed with higher accuracy. Then, whether or not the certifier is authenticated is output as a result of the collation.

  Next, the embodiment of the present invention will be supplementarily described with reference to the flowchart of FIG. In FIG. 3, the first authentication performed in accordance with the above-described operation description from processing 301 to 303 is the primary authentication. At this time, a pair of biometric information, biometric data, and operation information used for authentication are held. When a new operation is performed by the authenticator after the first authentication is performed, the priority of the stored operation is compared with the priority of the new operation, and the priority of the new operation is high Check again. The collation at this time does not impair the convenience of the certifier by using biometric information and biometric data acquired and held in advance. Moreover, according to the priority of operation, collation is performed with a precision higher than primary authentication. If the identity cannot be authenticated as a result of the verification, a message such as not being able to authenticate is displayed on the monitor, and the certifier is notified that the operation has been rejected. When the user is authenticated, the operation is approved, and the certifier can execute the operation without being aware of the authentication. The authentication from the processing 305 to 310 is the secondary authentication. This secondary authentication is repeated until the certifier consciously ends a series of operations.

DESCRIPTION OF SYMBOLS 101 Biometric information input part 102 Feature information acquisition part 103 Operation information acquisition part 104 Biometric data collation part 105 Biometric data group extraction part 106 Biometric data registration part 201 Collection of the whole registration biometric data 202 Collection of male biometric data 203 Height 170cm to 180cm Biological data set 204 of registrants of registrants 205 Set of registrants wearing glasses 205 Set of registrants who are male and are 170 to 180 cm tall and wearing glasses

Claims (1)

A biometric information input unit for acquiring biometric information of the certifier;
A feature information acquisition unit for acquiring feature information about the authenticator;
A biometric data registration unit that stores biometric data registered in advance and feature data associated with the biometric data;
A biometric data group extraction unit that extracts a biometric data group to be collated from the biometric data registration unit according to the feature information obtained by the feature information acquisition unit;
A biometric data matching unit that performs matching between the biometric information acquired by the biometric information input unit and the biometric data extracted by the biometric data group extraction unit;
It has an operation information acquisition unit that acquires operation information of the certifier,
Have
The biometric data collating unit performs first matching of the biometric information obtained from the biometric information input unit and the biometric data extracted by the biometric data group extracting unit according to the operation information obtained from the operation information obtaining unit. Operation information different from the operation information obtained by the first authentication from the operation information acquisition unit by performing authentication and authenticating that the certifier is a registrant in the first authentication and performing the next operation by the certifier. When the priority of the operation information newly obtained is higher than the priority of the operation information obtained in the first authentication set in advance, the accuracy is varied according to the operation information newly obtained, A biometric authentication device that performs secondary authentication that performs verification using a pair of biometric data and biometric information authenticated by primary authentication .

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