Biometric Camera Security via Dual Environment Segmentation
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Solution Overview
Problem
Biometric recognition systems in devices face security risks due to unsecured processing of biometric information, particularly when visual feedback mechanisms display real-time images, making them vulnerable to misappropriation and software attacks.
Innovation Solution
Implementing a dual operating environment with a high security state for sensitive biometric processing and a normal security state for visual feedback, where the biometric camera acquires images within a narrow field of view, and a feedback camera provides overlapping images for positioning, ensuring that sensitive biometric information is isolated from the display and software threats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual feedback mechanisms display real-time images captured by the biometric camera, then the subject can correctly position the device for optimal capture, but the displayed biometric information becomes vulnerable to misappropriation by photographic or video acquisition
Solution Approach 1:
The patent divides the imaging function into two separate cameras: a biometric camera with a narrow field of view for capturing high-quality biometric data, and a feedback camera with a wider field of view for providing visual guidance. This segmentation allows the feedback function to be separated from the sensitive biometric capture function, enabling safe display of positioning feedback without exposing the actual biometric information.
Solution Approach 2:
The feedback camera acts as an intermediary that provides visual feedback to the user without directly exposing the biometric information. It captures a broader view that includes the subject and positioning cues, allowing the user to correctly position themselves while the actual biometric capture remains isolated in the secure biometric camera feed that is not displayed.
2Device complexity
If a single camera is used for both biometric capture and visual feedback, then device complexity is reduced, but the biometric information becomes exposed to software attacks and misappropriation
Solution Approach 1:
The system segments the camera functions into distinct hardware components: a dedicated biometric camera for secure capture and a separate feedback camera for visual guidance. This hardware segmentation creates physical and logical isolation between the sensitive biometric data path and the displayed feedback path, preventing software attacks from accessing the actual biometric information through the display.
Solution Approach 2:
The feedback camera creates a separate copy of the visual scene that is suitable for display purposes but does not contain the actual biometric information. This copy is used for positioning feedback while the original biometric capture remains isolated, allowing the system to provide visual guidance without compromising security.
Data Source
AI summary
The invention provides methods, systems and computer program products for secure biometric image processing. The invention involves acquiring a first image of a first field of view corresponding to a biometric camera. A first set of image information defining the first image is received at a processor implemented first high security operating environment, which first set of image information includes a second sub-set of image information relevant for biometric feature extraction or comparison. A second image of the first field of view corresponding to the biometric camera is rendered on a display, which second image is defined by a third set of image information such that the third set of information excludes the second sub-set of image information.