Variable Response Wireless Tag for Secure Identification
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Solution Overview
Problem
Conventional systems for digital communication in products and industries face hardware, energy consumption, and security concerns, making them impractical for certain applications, necessitating cost-efficient and secure digital self-representation and management solutions.
Innovation Solution
The development of wireless identification tags that utilize a combination of conventional and specialized hardware and software, including antennas tuned to specific frequencies, transmitters, and energy storage components, to enable efficient and secure product identification, with features such as frequency-dependent response times, ambient energy harvesting, and fraud avoidance mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional digital communication systems are implemented in products, then data transfer capability is improved, but hardware complexity and energy consumption increase
Solution Approach 1:
The patent extracts the essential identification function from complex digital communication systems, using only the minimum necessary components (antenna, simple circuit, transmitter) to achieve product identification through RFID-like technology, thereby reducing hardware complexity while maintaining data transfer capability
Solution Approach 2:
The tag uses inexpensive, simple hardware components that can be easily manufactured and deployed at scale, sacrificing the need for complex, reusable digital communication infrastructure in favor of simple, cost-effective identification tags
2Loss of information
If conventional digital communication systems are implemented in products, then data transfer capability is improved, but energy consumption increases
Solution Approach 1:
The tag harvests energy from the electromagnetic field generated by readers or ambient sources, eliminating the need for external power sources or batteries. The tag serves itself by converting received electromagnetic energy into electrical energy to power its identification signal transmission
Solution Approach 2:
The tag transmits identification signals periodically or on-demand rather than continuously, reducing energy consumption. The tag activates its transmitter only when triggered by a reader or when identification is needed, rather than maintaining constant communication
3Speed
If wireless identification tags transmit immediate responses to all frequency signals, then response speed is improved, but fraud vulnerability increases
Solution Approach 1:
The tag applies different response characteristics to different frequency signals. Authorized frequencies (e.g., 2.4 GHz) receive immediate responses, while unauthorized frequencies (e.g., EAS gate frequencies) trigger delayed or no responses, creating localized security policies for different communication contexts
Solution Approach 2:
The tag implements preliminary frequency verification before transmitting identification signals. The circuit checks whether the received signal frequency matches authorized frequencies, and only then activates the transmitter, preventing fraud before it can occur
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
These tags provide efficient, cost-effective, and secure product identification and management, reducing energy consumption and addressing security concerns through innovative frequency management and energy harvesting, while preventing fraud and ensuring privacy in ownership transfers.
Implementation Method 1
at least one antenna tuned to receive energy transmitted at a first frequency within a frequency band around 900 MHz and at a second frequency within a frequency band around 2.4 GHz
Data Source
AI summary
Embodiments disclosed generally relate to a wireless identification tag with a response time that varies as a function of incoming signal frequency and system and methods for use thereof. In one implementation, the tag may include at least one antenna tuned to receive energy transmitted at a first frequency and at a second frequency. The tag may also include at least one transmitter. The tag may also include at least one circuit configured to detect whether energy is received in the first frequency or the second frequency, and to cause the at least one transmitter to transmit an immediate response when the second frequency is detected and to transmit a delayed response when the first frequency is detected.