Guidance screen control method of biometrics authentication device, biometrics authentication device, and program for same

A guidance screen control method of a biometrics authentication device which captures an image of body part and detects biometrics characteristic data from said captured image for biometrics authentication, comprising the steps of:

• judging, from output of image capture operation of an image capture device which captures the image of said body part, whether image capture has been successful;
• temporarily storing the cause of an unsuccessful image capture;
• detecting a most frequency cause among said temporarily stored plural causes when image capture is unsuccessful even after a plural prescribed number of image capture operations of said image capture device are executed;
• and
• displaying a guidance screen corresponding to the detected most frequency cause on display device.

A computer-readable medium encoded with a program, causing a computer to execute the steps of:

• judging, from the output of image capture operation of an image capture device which captures the image of a body part, whether said image capture has been successful;
• temporarily storing the cause of an unsuccessful image capture;
• detecting a most frequency cause among said temporarily stored plural causes when image capture is unsuccessful even after a plural prescribed number of image capture operations of said image capture device are executed;
• and
• displaying a guidance screen corresponding to the detected most frequency cause on said display device.