Security Tag Authentication via Optical Marker Positioning
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Solution Overview
Problem
Existing security tag systems are costly and prone to inaccuracies during authentication, as they require expensive digital signature registration and are susceptible to errors in recording and verifying random security features, which can compromise later authentication attempts.
Innovation Solution
A sheet-like product with predetermined positions of security features and markers, where each marker comprises a machine-readable or human-readable code, allowing for unique identification and secure authentication through a programmable device, and a method to determine the optical properties of security features relative to their markers using a stored map, ensuring accurate verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital signature registration and database initialization are used for each marking, then authentication security is improved, but production cost and complexity increase
Solution Approach 1:
The patent uses optical copies (images) of security features instead of creating digital signatures. The optical properties captured by the sensor are stored and compared directly, eliminating the need for cryptographic signature generation and database initialization for each marking.
Solution Approach 2:
The patent replaces expensive digital signature infrastructure with simple optical image storage. The authentication relies on comparing optical properties captured during enrollment with those captured during verification, using inexpensive image storage rather than cryptographic database systems.
2Ease of manufacture
If random security features are recorded during first authentication attempt, then registration effort is reduced, but measurement accuracy decreases
Solution Approach 1:
The patent performs preliminary enrollment of optical properties during manufacturing or first use. The system captures and stores the optical characteristics of security features in advance, creating a reference database before authentication begins. This preliminary action ensures accurate recording without requiring complex real-time processing during authentication.
Solution Approach 2:
The system uses feedback from the optical sensor to capture and store accurate measurements of security feature properties during enrollment. The captured optical data is then used as reference for subsequent authentication attempts, allowing the system to learn and adapt to the specific characteristics of each security tag.
3Adaptability or versatility
If security features are cut randomly from sheet-like product, then unique identification is improved, but manufacturing precision decreases
Solution Approach 1:
The patent changes the parameter being measured from absolute position to relative position. Instead of relying on precise cutting positions, the system measures the relative positions of security features with respect to reference markers on the sheet-like product. This parameter change allows random cutting while maintaining accurate feature identification through relative coordinate transformations.
Solution Approach 2:
The patent introduces reference markers as intermediaries between the cutting process and the authentication system. These markers serve as fixed reference points that allow the system to determine the positions of security features relative to known locations, compensating for variations in cutting precision and enabling accurate feature identification despite random placement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables efficient, accurate, and cost-effective visual authentication of security tags by ensuring that each section of the sheet-like product contains a marker and security feature, reducing errors and enhancing security by linking marker positions to stored information, thus preventing forgery and ensuring authenticity.
Implementation Method 1
at least one security feature having optical properties that change with the viewing angle
Data Source
AI summary
Sheet-like product and method for authenticating a security tag including a section of the sheet-like product. The sheet-like product includes at least one security feature having optical properties that change with the viewing angle and, and at least one marker, wherein each marker is uniquely attributable to a position on the sheet-like product. The position of the at least one security feature on the sheet-like product is predetermined relative to the position of the at least one marker on the sheet-like product.