Tamper-Activated Security Device With Segmented Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current security devices are unable to independently verify the authenticity and integrity of a security device after it has been tampered with, as tampering often destroys the device or renders authentication impossible, lacking an automated method for proof of authenticity and integrity verification.
Innovation Solution
A tamper-evident security device with at least two security features: a tamper-evident feature that alters irreversibly upon mechanical tampering and a robust feature that remains unchanged, allowing both features to be extracted from images using a programmable device like a smartphone, enabling independent verification of authenticity and integrity before and after tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tamper-evident security device is designed to destroy itself upon tampering, then the integrity verification is improved, but the authentication capability after tampering is lost
Solution Approach 1:
The patent divides the security device into two independent security features: a tamper-evident feature that detects and reports tampering, and a robust feature that maintains authentication capability. This segmentation allows the device to provide both integrity verification and post-tampering authentication simultaneously, resolving the contradiction between destroying the device upon tampering and maintaining authentication capability.
2Device complexity
If a security device uses a single security feature for both authentication and tamper evidence, then the device complexity is reduced, but the ability to independently verify authenticity and integrity is compromised
Solution Approach 1:
The patent implements two distinct security features with different functions: one optimized for tamper evidence and another for robust authentication. This segmentation enables independent verification of both authenticity and integrity, solving the problem of relying on a single security feature for multiple purposes.
Solution Approach 2:
Each security feature is designed with specific local qualities tailored to its function. The tamper-evident feature has properties optimized for detecting tampering (e.g., reversible material changes), while the robust feature has properties optimized for authentication (e.g., permanence, uniqueness). This local quality differentiation ensures each feature excels at its specific task.
3Measurement precision
If manual verification of security features is required, then the automation level is reduced, but the verification accuracy can be maintained through human expertise
Solution Approach 1:
The patent replaces manual visual inspection with automated optical detection systems. The security features are designed to interact with light in specific ways (reflection, absorption, diffraction patterns) that can be automatically captured by cameras and analyzed by algorithms, substituting human expertise with automated optical-mechanical systems while maintaining or improving verification accuracy.
Solution Approach 2:
The patent incorporates security features that exhibit distinct optical properties including color changes, fluorescence, or other light-interaction characteristics under specific conditions. These optical responses provide automated detectable signals that enable machine-based verification systems to accurately identify and validate security features without manual intervention.
Data Source
AI summary
A security device and a method for verifying such a security device are disclosed. The security device has at least two security features. At least one of the security features is a tamper-evident security feature, which is configured to alter irreversibly upon mechanical tampering with the security device. At least one other of the security features is a robust security feature, which is robust against tampering with the security device. The at least two security features can be extracted from at least one image of the security device with a programmable device having a camera at least in an intact state of the security device.