Tamper-Evident Seal Breaking-Point Imaging for Clean-Cut Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tamper-evident seals are vulnerable to undetectable manipulation, such as clean cuts, which can compromise their integrity and authenticity, especially in applications where visual inspection is impractical or requires specialized knowledge, and existing verification systems are costly or prone to evasion.
Innovation Solution
The method involves a tamper-evident seal with a predetermined breaking point, which is weakened at a specific location, ensuring that any attempt to access the sealed object must disrupt this point, and the seal's integrity is confirmed by capturing and analyzing a part of the seal that includes this point, using parameters like perforation dimensions and position relative to markings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex electronic seal verification system is used, then seal integrity verification reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex electronic verification systems with a simplified optical-mechanical system using standard imaging devices. The seal contains a breaking point with a specific geometric feature (e.g., a protrusion or notch) that can be detected through simple image capture and analysis, eliminating the need for expensive electronic circuits, RFID tags, or complex sensors while maintaining verification reliability.
Solution Approach 2:
The patent uses a disposable seal with an integrated geometric breaking point feature that serves as a one-time verification mechanism. The seal is designed to be broken at the predetermined point, and the geometric feature provides sufficient verification information without requiring expensive reusable electronic components. This approach reduces per-unit cost while maintaining security for single-use applications.
2Device complexity
If optical seal verification systems are used, then device complexity is reduced, but measurement precision deteriorates due to inability to detect clean cuts
Solution Approach 1:
The patent enhances the local geometric structure at the breaking point with a specific feature (such as a protrusion, notch, or asymmetric shape) that creates a unique visual signature. This localized geometric enhancement ensures that when the seal is broken, the change in the geometric feature's appearance provides precise detection capability. The breaking point's geometric design ensures that even clean cuts produce detectable changes in the visual pattern, allowing standard imaging devices to achieve high measurement precision without complex verification systems.
3Ease of operation
If a predetermined breaking point is provided in the seal, then ease of operation is improved for verification, but reliability worsens if the breaking point can be bypassed
Solution Approach 1:
The patent pre-configures the seal with a geometric breaking point feature during manufacturing, creating a predetermined failure mode that guides the breaking action to a specific location with high probability. The geometric feature (such as a notch or protrusion) is designed to concentrate stress or provide a mechanical advantage that makes breaking at this point the path of least resistance. This preliminary structuring ensures that verification is easy (the breaking point is predictable and detectable) while maintaining reliability (the geometric feature cannot be easily replicated or bypassed without detection).
Data Source
Figure 1a~1b
Figure 2a~4
Figure 5a~5c
AI summary
Method and system for confirming the integrity of a tamper- evident seal (1) based on a comparison of the value of at least one parameter describing the physical structure of a predetermined breaking point (31) provided in the seal (1), which value is determined from at least one captured image of the seal (1), with a pre-determined reference parameter value.