Unclonable Chipless RFID Tags for Secure Supply Chain Authentication
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Solution Overview
Problem
Current track-and-trace technologies in supply chains, such as barcodes and QR codes, are vulnerable to duplication and require direct line-of-sight scanning, while RFID tags are costly and susceptible to cloning, posing security risks and inefficiencies in managing and authenticating products, especially in pharmaceutical supply chains.
Innovation Solution
The development of unclonable chipless RFID (UCR) tags with a cross-registration approach, featuring a first tag portion secured to the product and a second portion integrated into the packaging, utilizing conductive patterns and randomly distributed metal particles to generate a unique ID, resistant to cloning and tampering, and employing machine learning for authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IC-based RFID tags are used, then tracking and authentication capability is improved, but cost increases and cloning susceptibility worsens
Solution Approach 1:
The patent extracts the RFID functionality from the expensive IC chip and implements it using only passive conductive structures (conductive members on product and conductive pattern on packaging). This removes the need for costly integrated circuits while maintaining RFID-based authentication capabilities through electromagnetic resonance interactions between the conductive elements.
Solution Approach 2:
The invention replaces expensive, complex IC-based RFID tags with inexpensive conductive structures that can be manufactured using standard printing or coating techniques. The conductive members and conductive patterns use simple materials like metal inks or conductive paints, making the system cost-effective for low-cost commodities.
2Ease of manufacture
If barcodes or QR codes are used, then cost is reduced, but security worsens due to ease of duplication
Solution Approach 1:
The patent replaces optical recognition systems (barcodes, QR codes) with electromagnetic-based RFID authentication. The conductive structures interact with electromagnetic fields to generate unique authentication signatures, providing security through physical electromagnetic properties rather than visual patterns that can be easily photographed and replicated.
Solution Approach 2:
The invention changes the authentication parameter from visual/optical domain (barcode patterns) to electromagnetic domain (resonance frequencies, impedance characteristics). The unique electromagnetic response of the conductive structures provides security based on physical parameters that are difficult to replicate without the actual physical structures.
3Ease of manufacture
If optical labels are used, then cost is reduced, but operational convenience worsens due to line-of-sight requirements
Solution Approach 1:
The patent replaces optical scanning requirements with electromagnetic field-based communication. RFID readers can detect and authenticate the conductive structures through electromagnetic coupling without requiring direct line-of-sight, enabling authentication through packaging materials, containers, or at a distance.
Solution Approach 2:
The conductive structures on the packaging serve as an intermediary that mediates between the RFID reader and the product. The electromagnetic field penetrates packaging materials to interact with the conductive members, enabling authentication without direct exposure of the product or requiring line-of-sight access.
4Productivity
If RFID tags are used, then batch scanning capability is improved, but cost increases
Solution Approach 1:
The patent extracts the active electronic components from traditional RFID tags and retains only the passive conductive structures. This allows multiple products to be authenticated in batch mode through electromagnetic field interactions without requiring expensive active RFID chips in each item.
Solution Approach 2:
The conductive pattern on the packaging serves multiple functions: it acts as part of the authentication system, provides electromagnetic coupling for batch reading, and can be integrated into standard packaging processes. This multi-functionality reduces overall system cost while maintaining productivity benefits.
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
The UCR tags provide a secure, cost-effective, and reliable means to authenticate products at the individual level, resistant to cloning and tampering, ensuring product integrity and traceability within the supply chain, even in adverse conditions.
Implementation Method 1
an unclonable chipless radio frequency identification (RFID) tag comprises a first tag portion comprising one or more first conductive members unremovably secured to a dielectric item; and a second tag portion comprising a conductive pattern
Data Source
AI summary
An unclonable chipless radio frequency identification (RFID) tag and corresponding cross-registration methods of determining an identity and/or tag signature of an RFID tag are described. In an example embodiment, an unclonable chipless RFID tag comprises a first tag portion comprising one or more first conductive members unremovably secured to a dielectric item; and a second tag portion comprising packaging conductive pattern. The first tag portion and the second tag portion are in a static or fixed physical relationship with respect to one another.