Dynamic Face Authentication Threshold Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing face authentication systems for managing entries into facilities struggle to accurately differentiate between authorized individuals and impersonators, leading to potential security breaches and inconvenience, as they often fail to achieve 100% accuracy in detecting impersonation, which can result in either false positives or false negatives, impacting both security and convenience.
Innovation Solution
A passage permission determination system that adjusts the individual permission criterion for face authentication based on impersonation detection, where a higher criterion is set at subsequent entry points if impersonation is detected at an initial point, ensuring that only authorized individuals can pass through by maintaining a dynamic threshold value for face authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the face authentication criterion is lowered to improve convenience and reduce false positives, then ease of operation is improved, but security level deteriorates due to increased false negatives allowing impersonators to pass through
Solution Approach 1:
The face authentication criterion is made dynamic rather than static. The determination threshold value is automatically adjusted based on the number of consecutive authentication failures. When failures exceed a predetermined count, the threshold increases to prevent impersonators from passing through, while maintaining lower thresholds for authorized individuals during normal operation.
Solution Approach 2:
The system implements feedback by monitoring authentication results and using this information to adjust the determination threshold value. The threshold is increased when consecutive failures are detected, creating a self-regulating mechanism that responds to system performance and adapts the security level accordingly.
2Reliability
If the face authentication criterion is raised to improve security level and prevent impersonation, then reliability is improved, but ease of operation deteriorates due to false positives causing passage restriction for authorized individuals
Solution Approach 1:
The determination threshold value dynamically adjusts based on authentication history. Rather than using a fixed high threshold that would block authorized individuals, the system raises the threshold only when consecutive failures indicate potential impersonation attempts, maintaining ease of operation during normal use while ensuring security when needed.
Solution Approach 2:
The system uses feedback from authentication results to modulate the threshold value. When authorized individuals experience repeated rejections (indicating possible threshold misalignment), the feedback mechanism prevents further threshold increases, thereby avoiding unnecessary passage restrictions while maintaining security.
3Reliability
If a fixed high determination threshold value is used to ensure high security level, then reliability is improved, but false positives increase causing authorized individuals to be wrongly restricted from passing through
Solution Approach 1:
The determination threshold value transitions from a fixed parameter to a dynamic one that adapts to system conditions. The threshold increases only when consecutive authentication failures are detected, providing high security when impersonation is suspected while avoiding false positives during normal operation when the threshold remains at lower levels.
Solution Approach 2:
The system changes the parameter (determination threshold value) based on operational context. The threshold value is modified from an initial level to a higher level when consecutive failures are detected, optimizing the balance between security and accuracy for impersonation detection at different stages of the authentication process.
4Ease of operation
If a fixed low determination threshold value is used to maximize convenience, then ease of operation is improved, but false negatives increase allowing impersonators to pass through undetected
Solution Approach 1:
The determination threshold value is made dynamic, starting at a lower level for maximum convenience during normal operation. When consecutive authentication failures are detected, the threshold dynamically increases to improve impersonation detection accuracy, thereby preventing false negatives while maintaining ease of operation during typical use.
Solution Approach 2:
The system dynamically changes the determination threshold parameter based on authentication patterns. The threshold remains low for convenience during normal operation but increases when consecutive failures indicate potential impersonation, optimizing both convenience and detection accuracy at different operational states.
Data Source
AI summary
A passage propriety assessment device, provided with: a assessment unit that authorizes a person to pass through a first entrance/exit when a first facial image of the person at the first entrance/exit satisfies an individual authorization criterion, which is a criterion for assessing by facial recognition that the person is a pass-authorized person; and a setting unit that, when it is assessed that a person who has been authorized to pass through the first entrance/exit is impersonating a pass-authorized person, sets the individual authorization criterion for a pass-authorized person for a second entrance/exit located after the first entrance/exit so as to be higher than the individual authorization criterion for the first entrance/exit. When a second facial image of a person at the second entrance/exit does not satisfy the individual authorization criterion that was set higher, the assessment unit restricts the person from passing through the second entrance/exit.