PROBLEM TO BE SOLVED: To provide a user authentication method and device for accurately authenticating a user by using a biological signal.SOLUTION: An authentication device is configured: to extract a plurality of authentication waveforms for authenticating a user from the biological information of the user to generate an authentication dataset (S1110) to match each of the plurality of extracted authentication waveforms with a plurality of registered waveforms included in a preliminarily stored registration dataset on one-to-one basis to calculate a degree of similarity between each of the plurality of extracted authentication waveforms and the plurality of registered waveforms (S1120) to extract a representative authentication waveform indicating the representative waveform of the plurality of extracted authentication waveforms and a representative registration waveform indicating the representative waveform of the plurality of registered waveforms to calculate a degree of similarity between the representative authentication waveform and the representative registration waveform (S1130) and to authenticate the user by using the degree of similarity between each of the plurality of extracted authentication waveforms and the plurality of registered waveforms and the degree of similarity between the representative authentication waveform and the representative registration waveform (S1140).SELECTED DRAWING: Figure 11COPYRIGHT: (C)2016,JPO&INPIT【課題】生体信号を用いてユーザを正確に認証するユーザ認証方法及び装置を提供する。【解決手段】認証装置は、ユーザの生体信号からユーザの認証のための複数の認証波形を抽出して認証データセットを生成しS1110、複数の抽出された認証波形のそれぞれを、予め格納された登録データセットに含まれる複数の登録された波形と一対一でマッチングして、複数の抽出された認証波形のそれぞれと複数の登録された波形との間の類似度を演算しS1120、複数の抽出された認証波形の代表波形を示す代表的な認証波形及び複数の登録された波形の代表波形を示す代表的な登録波形を抽出し、代表的な認証波形と代表的な登録波形との間の類似度を演算しS1130、複数の抽出された認証波形のそれぞれと複数の登録された波形との間の類似度及び代表的な認証波形と代表的な登録波形との間の類似度を用いてユーザを認証するS1140。【選択図】図11
