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Publication Number
US-10902104-B2
Publication Date
2021-01-26
Expiration Date
Abstract
Exemplary embodiments are directed to a biometric security system including an interface, a biometric acquisition device, and a processing device in communication with the interface and biometric acquisition device. The processing device is configured to display a challenge to a subject via the interface, and receive as input a response to the challenge from the subject. Simultaneous to receiving the response to the challenge from the subject, the processing device is configured to capture a biometric characteristic of the subject with the biometric acquisition device. The processing device is configured to analyze the received response to the challenge relative to a preset valid response, and analyze the captured biometric characteristic of the subject for biometric authenticity. The processing device is configured to verify the subject based on both a successful match between the response to the challenge and the preset valid response, and a successful finding of biometric authenticity.
Core Innovation
The invention provides a biometric security system that verifies a subject by combining display of a first challenge, receipt of the subject’s response, capture of one or more images during the response, and contemporaneous capture of a biometric characteristic. The system analyzes the response relative to a preset valid response while also analyzing the biometric characteristic for biometric authenticity, and verification is based on both a successful match to the preset valid response and a successful finding of biometric authenticity, where the successful match indicates liveness of the subject.
The first challenge is presented via an interface and includes either movement of a gaze attractor to induce motion of an eye of the subject to follow the gaze attractor, or a request for visual input of a numerical passcode using a numerical display of the interface. Based on the one or more captured images, the system determines a distance of the subject and a gaze angle of the subject relative to the interface, and selects a position of the gaze attractor or a number of the numerical display determined to be of focus by the subject.
The system includes a camera and a biometric acquisition device in communication with the interface and processing device, and it stores and uses the challenge and preset valid response for verification. Dependent refinements specify biometric authenticity analysis using iris parameters and routines such as iris segmentation and iris matching, or image-based liveness indicators such as facial expression variation, blinking frequency, and iris texture.
Claims Coverage
The partial content identifies three independent claims. Across these claims, the inventive features center on presenting a visual first challenge via an interface, capturing images and contemporaneous biometric characteristics, using distance and gaze angle from the images to select a gaze attractor position or a passcode number, and verifying the subject using both a preset-response match and biometric authenticity.
Biometric security system with challenge-response and biometric authenticity verification
A biometric security system comprising an interface, a biometric acquisition device, a camera, and a processing device configured to display a first challenge via the interface, receive a response, capture one or more images during input of the response, contemporaneously capture a biometric characteristic, analyze the response relative to a preset valid response by determining distance and gaze angle based on the captured images and selecting a gaze attractor position or a focused numerical display number, analyze the biometric characteristic for biometric authenticity, and verify the subject based on both a successful match to the preset valid response and a successful finding of biometric authenticity, with the successful match indicating liveness.
Method of verification using visual gaze or numerical passcode challenge
A method of verification of a biometric security system comprising displaying a first challenge to a subject via an interface, including movement of a gaze attractor to induce the eye to follow or requesting visual input of a numerical passcode, receiving a response, capturing one or more images during response input, contemporaneously capturing a biometric characteristic, analyzing the response relative to a preset valid response by determining distance and gaze angle from the captured images and selecting a gaze attractor position or a passcode number determined to be of focus, analyzing the biometric characteristic for biometric authenticity, and verifying based on both a successful match to the preset valid response and a successful finding of biometric authenticity, with the successful match indicating liveness.
Non-transitory computer-readable medium for challenge-response and biometric authenticity
A non-transitory computer-readable medium storing instructions executable by a processing device so that execution displays a first challenge via an interface, including movement of a gaze attractor or a request for visual input of a numerical passcode, receives a response, captures one or more images during response input, contemporaneously captures a biometric characteristic, analyzes the response relative to a preset valid response by determining distance and gaze angle based on the captured images and selecting a gaze attractor position or a focused numerical display number, analyzes the biometric characteristic for biometric authenticity, and verifies the subject based on both a successful match to the preset valid response and a successful finding of biometric authenticity, with the successful match indicating liveness.
Across the identified independent claims, verification requires both challenge-response matching and biometric authenticity analysis, with distance and gaze angle derived from captured images used to select the gaze attractor position or determine which numerical display number is of focus. The same core sequence is implemented as a system, as a method, and as executable instructions stored on a non-transitory computer-readable medium.
Stated Advantages
Documented Applications
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