Proxy Device Adjusting RFID Tag Privacy Levels
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Solution Overview
Problem
RFID systems face issues with privacy infringement as electronic tags respond to all queries, potentially exposing private information and lacking control over privacy levels, especially in scenarios like loss of a proxy device or disabled home servers.
Innovation Solution
A mobile privacy protection system utilizing a proxy device that adjusts the privacy level of electronic tags by registering them with a home server, allowing selective response to queries and handling exceptional situations through secure authentication and password management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an electronic tag responds to all queries in an RFID system, then the tag can be easily identified and accessed, but user privacy is infringed and the tag lacks control over privacy levels
Solution Approach 1:
The patent introduces a proxy device as an intermediary between the reader and the electronic tag. The proxy device receives queries from readers, determines whether to forward them to the tag based on privacy levels, and manages tag information selectively. This mediator resolves the contradiction by enabling tag accessibility when appropriate while preventing privacy infringement through controlled information disclosure.
Solution Approach 2:
The patent implements dynamic privacy level adjustment where the electronic tag can change its response behavior based on different privacy levels. The tag transitions between states (e.g., normal operation, privacy protection, emergency modes) allowing it to be accessible when needed while protecting privacy when required, thus resolving the static contradiction between accessibility and privacy protection.
2Object-affected harmful factors
If a proxy device is used to control privacy levels, then user privacy is protected, but the system complexity increases
Solution Approach 1:
The proxy device is designed to perform multiple functions: it acts as a privacy manager, an emergency controller, and a communication intermediary. By consolidating these functions into a single device that users already carry (like a mobile phone), the patent minimizes additional complexity while achieving comprehensive privacy protection and emergency response capabilities.
Solution Approach 2:
The system enables users to independently control their own privacy levels and emergency settings through the proxy device without requiring constant intervention from external systems. The electronic tag also has autonomous capabilities to respond to emergency commands from the proxy device, reducing the need for complex centralized control infrastructure.
3Reliability
If the home server is disabled or the proxy device is lost, then system reliability is compromised, but exceptional situation processing is needed
Solution Approach 1:
The patent implements preliminary action by pre-configuring emergency modes and privacy levels in the proxy device before exceptional situations occur. The user can set up emergency contact information, preferred privacy levels, and response preferences in advance. When the home server is unavailable or the proxy is lost, these pre-configured settings enable the electronic tag to continue operating according to predetermined rules without requiring real-time server intervention.
Solution Approach 2:
The system provides beforehand cushioning by creating backup mechanisms for exceptional situations. The proxy device stores local copies of privacy level configurations and emergency contact information, serving as a buffer when the home server is disabled. The electronic tag is also prepared with emergency response capabilities that can be activated without server communication, cushioning against system unavailability.
Data Source
AI summary
A mobile privacy protection system using a proxy, a proxy device, and a mobile privacy protection method are provided. The mobile privacy protection system includes: an electronic tag to store predetermined tag information; a proxy device to adjust a privacy level of the electronic tag; and a home server to create new tag information in response to a request from the proxy device wherein the new tag information is used to adjust the privacy level.