Biometric authentication technology has used the operating system and various applications including PC login devices and validation devices for ATMs for various fields in Japan. In addition to studying the usability of biometrics, I'm also interested in acceptability. In particular, I'm interested in how people will accept (or reject) biometric authentication system. In this paper, I describe acceptability of biometrics with a case study of the student attendance management system by finger vein authentication technology in our university.