Photosensitive Switch Antenna Protection Against Hacking
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Solution Overview
Problem
Contactless electronic systems with antennas, such as RFID transponders and microcircuit cards, are vulnerable to hacking due to their ability to communicate remotely, which can lead to unauthorized data access, especially when left unattended or in environments where protection mechanisms like light-dependent switches are ineffective.
Innovation Solution
A protection device featuring a photosensitive switch that can be controlled to inhibit antenna operation, either by short-circuiting or opening the antenna circuit, and can change configuration based on light exposure, ensuring secure operation only when authorized by the user, either through manual action or masking the switch from light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a photosensitive switch is used to protect the electronic system when hidden, then protection against hacking in hidden configurations is improved, but protection when illuminated (visible) deteriorates
Solution Approach 1:
The protection system is divided into two independent photosensitive switches with opposite control logics: Switch 1 activates the antenna when illuminated, Switch 2 activates the antenna when not illuminated. This segmentation allows each switch to handle specific visibility scenarios, resolving the contradiction between protecting hidden and visible states.
Solution Approach 2:
The patent applies inverse control logic to the two photosensitive switches. While a conventional single photosensitive switch would activate only in one lighting condition, this invention uses one switch that activates when illuminated and another that activates when not illuminated, thereby covering both visible and hidden protection scenarios.
2Ease of operation
If a mechanical or pressure-sensitive switch is used for user authorization, then ease of operation is improved, but reliability of secure inhibition deteriorates due to user error
Solution Approach 1:
The patent replaces mechanical or pressure-sensitive switches with photosensitive switches that respond to light conditions. This substitution eliminates the need for manual pressing actions that can lead to user errors (forgetting to press twice or maintaining pressure), while providing more reliable and consistent control through optical detection.
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 solution effectively protects electronic systems from hacking by ensuring they remain inactive unless explicitly authorized by the user, regardless of their visibility or environmental lighting conditions, thereby safeguarding confidential data.
Implementation Method 1
A protection device featuring a photosensitive switch that can be controlled to inhibit antenna operation, either by short-circuiting or opening the antenna circuit, and can change configuration based on light exposure
Implementation Method 2
Such a microcircuit card comprises an antenna in order to receive its electric power supply by induction and in order to communicate with a suitable reader/transmitter
Data Source
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Figure 5~6
AI summary
A device for protection against unauthorized use of an electronic system (1) comprising an antenna (3), the device comprising a first switch capable of inhibiting the operation of the electronic system (1), the first switch being arranged in short circuit (5) between at least two turns (4) of the antenna (3). An electronic system (1) comprising such a protective device.