Dual-Communication Authentication Device Security
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Solution Overview
Problem
Existing authentication devices face issues such as risk of loss or theft, complexity in use, and vulnerability to attacks, particularly when accessing specific computer sites or places, as they often rely on single communication methods and lack robust security.
Innovation Solution
A portable electronic authentication device utilizing two orthogonal communication means: a proximity communication method (infrared, optical, sound, or NFC) for local authentication and a long-distance method (RF, HF, UHF, or Bluetooth) to enhance security and facilitate semi-automatic access to computer sites or places, with features like automatic access management and secure storage of credentials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single communication method is used for authentication, then the device is simpler to operate, but the security is reduced
Solution Approach 1:
The patent applies dimensionality change by introducing a second communication dimension (acoustic signals) orthogonal to the first (radio frequency signals). This allows authentication to occur through multiple independent channels, enhancing security without significantly increasing operational complexity for the user. The acoustic dimension provides an additional layer that is difficult to intercept or forge compared to traditional RF alone.
Solution Approach 2:
The authentication process is segmented into two distinct communication phases: RF communication for initial data exchange and acoustic communication for verification. This segmentation allows each communication method to perform its specialized function, with RF handling general authentication data and acoustic providing secure verification, thereby improving overall security while maintaining manageable complexity.
2Reliability
If proximity communication is used for local authentication, then the security is improved, but the communication range is limited
Solution Approach 1:
The patent merges two communication methods with different range characteristics: RF communication provides long-range capability for initial contact, while acoustic communication provides short-range secure verification. By combining these complementary methods, the system achieves both extended operational range and enhanced security, as the acoustic component ensures local authentication while RF enables broader accessibility.
3Reliability
If multiple communication means are used, then the security layer is enhanced, but the device complexity increases
Solution Approach 1:
The authentication system operates largely autonomously by automatically selecting and coordinating between RF and acoustic communication methods based on the authentication state. The device self-manages the complexity of dual-communication protocols without requiring user intervention to switch modes or configure settings, thereby enhancing security while maintaining ease of operation.
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 dual communication approach provides an additional security layer, making the device more difficult to steal or lose, while enabling secure and convenient access to resources, with automatic authentication and deactivation features for enhanced user management.
Implementation Method 1
The first communication means transmits or receives an infrared, optical, sound, ultrasonic or near field (NFC) signal
Implementation Method 2
The second communication means transmits or receives an RF, HF, UHF or Bluetooth signal
Data Source
AI summary
A portable electronic authentication device (10) for providing access to a website or a computer resource or a secure place. The portable electronic device includes a first communication unit (11) and a second communication unit (12) different from the first communication unit. The first communication unit is intended to receive an interrogation signal (SP) from a control device of a control system, which includes the portable electronic device. The second communication unit is intended to transmit a response signal (SL) which includes identification data of the portable electronic device to authenticate the portable electronic device in the control system and allow access to a website or a computer resource or a secured place.