Dynamic Identifier Management in RFID Tags
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Solution Overview
Problem
RFID tag devices can be used for unauthorized transactions if stolen, as they retain a permanent identifier that can be used to conduct transactions without the owner's permission until the account is depleted or terminated.
Innovation Solution
Implementing a dynamic identifier system where the RFID tag device uses a temporary identifier generated outside of the device, which is exchanged during a transaction and erased afterward, preventing unauthorized use by requiring a mobile device to provide a new identifier for each transaction and powering the tag only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a permanent identifier is used in the RFID tag device, then the device can conduct transactions reliably, but the device becomes vulnerable to unauthorized use if stolen
Solution Approach 1:
The patent implements dynamic identifiers that change over time or with each transaction, replacing static permanent identifiers. The identifier is updated periodically or event-driven, ensuring that even if a stolen tag is used, the identifier becomes invalid after a short period or single use, preventing prolonged unauthorized access while maintaining reliable transaction capability during authorized use
Solution Approach 2:
The patent changes the identifier parameter itself rather than maintaining a fixed value. The identifier transitions from a permanent static value to a temporary dynamic value that expires or changes, fundamentally altering the security parameter of the RFID tag to balance reliability with protection against theft
2Object-affected harmful factors
If a dynamic identifier is implemented, then unauthorized transactions are prevented, but the device complexity increases
Solution Approach 1:
The RFID tag device automatically manages its own identifier updates without requiring external intervention for each change. The tag autonomously generates or retrieves new identifiers and manages their lifecycle, reducing the burden on external systems while achieving dynamic identifier security
Solution Approach 2:
The system pre-generates or pre-arranges identifier sequences before they are needed for transactions. This allows the tag to have identifiers ready in advance, reducing real-time computational complexity during actual transaction moments while still achieving dynamic identifier security
Data Source
AI summary
A method and apparatus for an RFID tag device that uses dynamic identifiers for transactions rather than a fixed identifier. An associated device communicates with the RFID tag device and obtains dynamic identifiers for transactions and provides the dynamic identifiers to the RFID tag device. The RFID tag device is protocol-agile and can be configured to operate using different protocols to complete transactions.