PROBLEM TO BE SOLVED: To provide a biological authentication apparatus in which a user is supported in placing a plurality of portions containing biological information at positions suitable for sensors which read biological information.SOLUTION: A biological authentication apparatus (1) comprises a first sensor (41) which generates a first biological image in which biological information of fingers of a user is imaged, a second sensor (42) which generates a second biological image in which biological information of a palm of the user is imaged, guide members (431a, 431b) which regulate positions of the fingers of the user, and a position determination section (12) in which, if at least a part of the biological information of the fingers is out of an imaging range of the first sensor, on the basis of a position relation between the guide members and the biological information of the fingers estimated from a first subject area, a moving direction of a hand of the user is determined for settling the biological information of the fingers within the imaging range of the first sensor and settling the biological information of the palm within an imaging range of the second sensor.COPYRIGHT: (C)2013,JPO&INPIT【課題】利用者が生体情報を含む複数の部位を生体情報を読み取るセンサに対して適切な位置に置くことを支援する生体認証装置を提供する。【解決手段】生体認証装置(1)は、利用者の指の生体情報が写った第1の生体画像を生成する第1のセンサ(41)と、利用者の手のひらの生体情報が写った第2の生体画像を生成する第2のセンサ(42)と、利用者の指の位置を規制するガイド部材(431a、431b)と、指の生体情報の少なくとも一部が第1のセンサの撮影範囲から外れている場合、ガイド部材と第1の被写体領域から推定される指の生体情報の間の位置関係に基づいて、指の生体情報が第1のセンサの撮影範囲に収まり、かつ手のひらの生体情報が第2のセンサの撮影範囲に収まるための利用者の手の移動方向を求める位置判定部(12)とを有する。【選択図】図5
