Tearable Substrate RFID Tag for Tamper Detection

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Solution Overview

Problem

Existing RFID systems lack effective means to detect tampering or removal of pressure-sensitive RFID tags, which is crucial for preventing theft, product substitution, and warranty violations.

Innovation Solution

RFID tags with tearable substrates and adhesive layers that become substantially inoperable upon attempted removal, incorporating a portion of the RFID circuit on materials like fiber or plastics that break when force is applied, ensuring the tag is destroyed and unable to transmit information if tampered with.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If RFID tags are made removable for practical use, then ease of operation is improved, but security and tampering detection capability deteriorates

Engineering Contradiction:

Improveremovability of RFID tagVSAvoidtampering detection capability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The RFID tag is segmented into two functional parts: a reusable RFID circuit component and a tearable substrate with adhesive layer. The RFID circuit can be recovered and reused after tag removal, while the tearable substrate remains on the surface providing continuous tampering detection capability through its break-on-removal property.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system discards the tearable substrate upon removal (which provides the security function by breaking) and recovers/reuses the RFID circuit component. This allows the RFID functionality to be retained while the security feature is activated through the discarded substrate's breakage.

Inventive Principle:

Principle #34Discarding and recovering

2Duration of action of stationary object

If RFID tags use durable substrates for longevity, then duration of action is improved, but ease of manufacture and cost-effectiveness deteriorates

Engineering Contradiction:

Improveservice life of RFID tagVSAvoidmanufacturing cost and complexity

Core Design Contradiction:

Duration of action of stationary objectVSEase of manufacture

Solution Approach 1:

The RFID tag uses a composite structure combining a tearable substrate (paper, fabric, or plastic) with an adhesive layer and RFID circuit. This composite approach enables the use of inexpensive, easily manufacturable materials while achieving both security functionality and acceptable service life for the intended application duration.

Inventive Principle:

Principle #40Composite materials

3Reliability

If RFID tags are made permanently affixed for security, then tampering detection is improved, but ease of operation and flexibility deteriorates

Engineering Contradiction:

Improvetampering detection capabilityVSAvoidremovability and repositioning flexibility

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

By separating the RFID circuit from the tearable substrate, the system enables selective removal: the RFID circuit can be detached and reused elsewhere, while the substrate remains affixed to the original surface providing ongoing security monitoring through its break-on-removal characteristic.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS8427316B2Detecting tampered with radio frequency identification tags

Publication Date: 2013.04.23 NEOLOGY INC

AI summary

The present disclosure is directed to a system and method for tracking tampered with RFID tags. In some implementations, an RFID tag includes a tearable substrate including at least a portion of an RFID circuit. The portion of the RFID circuit is substantially destroyable in response to at least an attempt to remove the tag from a surface. In addition, the RFID includes an adhesive layer adjacent at least a portion of the tearable substrate and configured to affix the tag to the surface.