Contactless Payment Device Motion-Activated Security Circuit
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Solution Overview
Problem
Contactless payment devices are vulnerable to wireless attacks that can capture user or account information due to the lack of authentication in their passive electronic circuitry, which can be activated by spoofing signals, compromising security, especially in crowded areas.
Innovation Solution
Incorporating an actuator and accelerometer in contactless payment devices to activate or deactivate wireless communication based on user input, such as pre-programmed gestures, ensuring secure data transmission and preventing unauthorized access by modifying the resonant frequency of the wireless circuits in response to user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If passive electronic circuitry is used in contactless payment devices, then convenience is improved by avoiding embedded power sources, but security deteriorates due to vulnerability to spoofing attacks and unauthorized activation
Solution Approach 1:
The patent transforms the static passive circuitry into a dynamic system by introducing an accelerometer that detects motion states and an actuator that switches the wireless communication device between active and inactive states. This dynamic control mechanism allows the device to automatically activate only when detected in motion (indicating user possession) and deactivate when stationary (indicating storage), thereby maintaining convenience while significantly improving security against spoofing attacks.
2Reliability
If blocking devices such as special wallets are used to prevent wireless attacks, then security is improved, but convenience deteriorates due to the need to remove the device from storage before use
Solution Approach 1:
The patent implements a self-service security mechanism where the contactless payment device autonomously determines its own activation state based on motion detection. The accelerometer continuously monitors the device's motion state, and when motion is detected (indicating the user has picked up the device), the actuator automatically activates the wireless communication circuitry. This eliminates the need for manual removal from blocking storage devices, maintaining convenience while providing continuous security protection when the device is stored.
3Ease of operation
If the wireless communication device is continuously active, then ease of use is improved, but security deteriorates due to increased exposure to wireless attacks in crowded areas
Solution Approach 1:
The patent implements periodic activation control based on motion detection cycles. The accelerometer continuously monitors for motion, and the actuator periodically switches the wireless communication device between inactive and active states. The device remains inactive during storage periods and only activates when motion is detected, creating a periodic on-demand activation pattern. This significantly reduces the cumulative exposure time to wireless attacks while ensuring the device is active whenever the user needs to use it, maintaining ease of use.
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
Enhances the security of contactless payment transactions by seamlessly activating or deactivating wireless circuitry based on user input, preventing unauthorized access while maintaining the convenience of contactless payments.
Implementation Method 1
an accelerometer communicatively coupled to the processor and the power source
Implementation Method 2
modifying the resonant frequency of the wireless circuits in response to user interaction
Data Source
AI summary
A contactless payment device including a wireless communication device; a power source; a processor coupled to the power source; an accelerometer communicatively coupled to the processor and the power source; and an actuator communicatively coupled to the wireless communication device and the processor. The actuator is configured to activate the wireless communication device when the actuator is set in a closed state, and deactivate the wireless communication device when the actuator is set in an open stat. The processor is configured to receive an incoming signal from the accelerometer; determine whether the incoming signal corresponds to a pre-programmed signal corresponding to an enabling gesture; and set the actuator in the dosed state for a time interval, when the incoming signal corresponds to the enabling gesture.