US 11,775,627 B2 · Biometric authentication device, method and recording medium

Abstract

The device outputs, to a display device, display information on a symbol which is to be moved and displayed; acquires a face image of a subject which has been captured by an image capturing device at a capturing timing while the display device displays the symbol; detects, from the face image, a line-of-sight position; determines that the subject of the face image is a living body when one or more prescribed conditions including a case in which the line-of-sight position matches a display position of the symbol at the image-capturing timing are all satisfied; and outputs an authentication result indicating success of the authentication when the subject is determined to be a living body and the biometric authentication is successful, and outputs an authentication result indicating failure of the authentication when the subject is determined not to be a living body or when the biometric authentication fails.

Claims20

Dependent claims

A biometric authentication device comprising one or more memories storing instructions and one or more processors configured to execute the instructions to:

output a display information about a symbol to be moved and displayed on a display device;
output an instruction message which tells a timing of touching the symbol, wherein the timing is when the symbol color changes or when the symbol shape changes;
change the symbol color or the symbol shape;
receive touch position information indicating a touch position of a touch input on the display device when the touch input is performed on the display device;
acquire a face image of a subject at an image capturing timing when the touch position information is received;
detect, from the face image, a line-of-sight position on the display device;
determine that the subject of the face image is a living body based on the line-of-sight position, a display position of the symbol, and the touch position;
perform, based on the face image, biometric authentication when the subject of the face image is determined to be the living body;
and
output a result of the biometric authentication.

7 more elements

A non-transitory computer-readable recording medium that records a biometric authentication program causing a computer to perform:

outputting a display information about a symbol to be moved and displayed on a display device;
outputting an instruction message which tells a timing of touching the symbol, wherein the timing is when the symbol color changes or when the symbol shape changes;
changing the symbol color or the symbol shape;
receiving touch position information indicating a touch position of a touch input on the display device when the touch input is performed on the display device;
acquiring a face image of a subject at an image capturing timing when the touch position information is received;
detecting, from the face image, a line-of-sight position on the display device;
determining that the subject of the face image is a living body based on the line-of-sight position, a display position of the symbol, and the touch position;
performing, based on the face image, biometric authentication when the subject of the face image is determined to be the living body;
and outputting a result of the biometric authentication.

6 more elements

Dependencies are inferred from the claim text.

Biometric authentication device, method and recording medium

Life of this patent

Biometric authentication device, method and recording medium

Life of this patent

Abstract

Claims20