PROBLEM TO BE SOLVED: To dispose a finger in a natural state to appropriately execute a biometric authentication processing.SOLUTION: The biological information reading device includes a device body 2 having a finger disposing part 6 allowing disposition of one finger along a bending shape in a relaxed state and guide parts 5a and 5b to dispose fingers other than the one finger in a relaxed state with the one finger disposed in the finger disposing part 6 and imaging means 18 provided inside the device body 2 for imaging the one finger disposed at the finger disposing part 6 to acquire biological information.COPYRIGHT: (C)2009,JPO&INPIT【課題】指を自然な状態で配置することができ、生体認証処理を適切に行うことを可能とする。【解決手段】一の指を、力を抜いた状態での曲がり形状に沿って配置可能な指配置部6、及び、指配置部6に一の指を配置した状態で、一の指を除く他の指を力を抜いた状態で配置可能なガイド部5a、5bを備えた装置本体2と、装置本体2内に設けられ、指配置部6に配置した一の指を撮影して生体情報を取得する撮影手段18とを備えた構成とする。【選択図】図3