RFID Security Tape with Segmented Tamper-Evident Layers
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Solution Overview
Problem
Existing RFID security tapes do not provide a clear visual indication of tampering, as the RFID inlay can be reapplied after removal, making it difficult to determine if an asset has been compromised.
Innovation Solution
The RFID security tape consists of a tamper-evident layer, an RFID inlay, a blocking layer, metal foil with an adhesive bottom surface, and a release liner, where the layers are in adhesive connection, and includes separation layers made of fibrous materials to ensure damage to the RFID inlay when the tape is removed, preventing reapplication and providing visual evidence of tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the RFID inlay is integrated with the tamper-evident security tape, then the asset can be automatically identified and tracked, but the RFID inlay can be reapplied after removal, making it difficult to determine if the asset has been compromised
Solution Approach 1:
The security tape is divided into distinct functional layers: a tamper-evident layer that provides visual residue upon removal, and an RFID inlay layer that contains the identification data. This segmentation allows the tamper-evident layer to remain on the asset as evidence while the RFID inlay can be separately damaged or removed, providing both automated tracking and reliable tamper detection.
Solution Approach 2:
An adhesive layer acts as an intermediary between the tamper-evident layer and the RFID inlay layer. This adhesive layer is designed to fail in a specific way during removal, causing visible damage to the tamper-evident layer while allowing the RFID inlay to be separated. The adhesive thus mediates the separation process to ensure tamper evidence is generated.
2Reliability
If the tamper-evident security tape is designed to leave visible residue upon removal, then tamper evidence is provided, but the RFID inlay can still be reapplied to hide evidence of tampering
Solution Approach 1:
The security tape comprises multiple segmented layers with distinct functions: the tamper-evident layer provides visual residue, the RFID inlay layer provides identification, the blocking layer prevents signal interference, and the release liner enables controlled removal. This segmentation allows each layer to perform its specific function without compromising the others.
Solution Approach 2:
The security tape uses a composite structure combining different materials: a polymeric tamper-evident layer, an RFID inlay with antenna and circuit, a blocking layer material, and a release liner. These composite materials work together to provide both tamper evidence and RFID functionality while managing the complexity through integrated design.
3Reliability
If multiple layers are used in the RFID security tape, then tamper evidence and RFID functionality are both achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The security tape is manufactured as separate functional layers that are subsequently assembled. The tamper-evident layer, RFID inlay layer, blocking layer, and release liner are produced independently and then bonded together using adhesive layers, allowing each component to be optimized and manufactured separately before final assembly.
Solution Approach 2:
Multiple functional layers are merged into a single integrated security tape assembly through adhesive bonding. The tamper-evident layer, RFID inlay, blocking layer, and release liner are combined in a specific sequence to create a unified product that provides both tamper evidence and RFID functionality while maintaining ease of application and removal.
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 design ensures obvious damage to the RFID inlay and blocking layer upon removal, providing a clear visual indication of security breaches and preventing reapplication, thus enhancing tamper evidence and security tracking.
Implementation Method 1
The adhesive connection may be achieved by providing an adhesive layer between adjacent layers of the RFID security tape
Implementation Method 2
an RFID inlay with the tamper-evident security tape to form an RFID security tape allows an asset to which the RFID security tape is applied to also be automatically identified and tracked when the asset is within reading range of an RFID reader that emits a radio frequency
Data Source
AI summary
An RFID security tape having: a layer of tamper-evident tape; a layer of an RFID inlay; a blocking layer; a layer of metal foil having an adhesive bottom surface; and a layer of a release liner, wherein all layers of the RFID security tape are in adhesive connection with each other and wherein the layer of the RFID inlay is configured to be damaged when the RFID security tape has been applied to an asset and the layer of tamper-evident tape is subsequently removed from the asset.