Electromagnetic Tag with Optical Sensor for Secure Authentication
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Solution Overview
Problem
Conventional electromagnetic tags are vulnerable to malicious interference and data corruption, as the communication medium can be undetectable, making it difficult for users to ensure the security and integrity of the information exchanged between tags and readers.
Innovation Solution
An electromagnetic tag with a sensor that selectively responds to authorized optical signals, using an optical transmitter/emitter and receiver to encode and decode information, and a control component to manage states and functionality, ensuring secure communication and authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electromagnetic tags use undetectable communication mediums, then communication capability is achieved, but security and detectability of malicious interference are compromised
Solution Approach 1:
The patent introduces an optical signal as an intermediary medium between the reader and tag. The optical signal serves as a detectable carrier that enables both communication and security verification. The sensor detects the optical signal to verify authenticity, while the transmitter/emitter modulates the optical signal for data transmission, thus resolving the contradiction between achieving communication and maintaining security.
Solution Approach 2:
The patent utilizes optical signal detection akin to color or spectral recognition. The sensor detects specific optical characteristics (analogous to detecting color) to verify the authenticity of the tag and distinguish authorized communication from malicious interference. This allows the system to maintain security while enabling communication through optical modulation.
2Reliability
If tags remain dormant to unauthorized signals, then security is improved, but communication capability with authorized readers is restricted
Solution Approach 1:
The patent applies local quality by making the tag's response characteristics location- and context-dependent. The sensor detects optical signals with specific characteristics (authorized readers) while ignoring others (unauthorized sources). The transmitter/emitter selectively modulates optical signals based on the detected characteristics, enabling communication only with authorized readers while remaining dormant to unauthorized attempts.
Solution Approach 2:
The tag transitions dynamically between dormant and active states based on the detected optical signal characteristics. When an authorized reader's optical signal is detected, the tag becomes active and communicates; when unauthorized signals are detected, the tag remains dormant. This dynamic behavior resolves the contradiction between security and communication accessibility.
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 tag remains dormant to unauthorized signals, ensuring secure communication and authentication, reducing the risk of data corruption and eavesdropping, while allowing authorized access and data exchange.
Implementation Method 1
an optical transmitter/emitter that transmits/emits optically encoded information
Implementation Method 2
a sensor that selectively responds to authorized optical signals
Data Source
AI summary
An electromagnetic tag includes a communication component, which includes an optical transmitter/emitter that transmits/emits optically encoded information.