BLE ID Transmitter Assembly for Secure Vehicle Access Authentication
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Solution Overview
Problem
Existing vehicle access control systems using radio-based ID transmitters are costly and complex, necessitating a balance between cost-efficiency and security while maintaining user comfort.
Innovation Solution
A Bluetooth Low Energy (BLE) based ID transmitter system with a detachable design, utilizing a BLE interface, microcontroller, and authentication signal as a BLE beacon packet, enabling secure and efficient authentication with complementary cryptographic keys and position determination through RSSI values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional radio-based ID transmitter systems are used for vehicle access control, then authentication security and user comfort are maintained, but system cost and complexity increase significantly
Solution Approach 1:
The ID transmitter is divided into two separable parts: a first part containing the BLE interface, microcontroller, and switching apparatus, and a second part containing the memory element with authentication information. This segmentation allows the system to use simple BLE technology while maintaining security through the separate memory element, reducing overall system complexity and cost compared to traditional integrated radio-based systems.
2Reliability
If traditional radio-based ID transmitter systems are used for vehicle access control, then authentication security and user comfort are maintained, but system cost increases
Solution Approach 1:
The patent replaces traditional complex radio-based authentication mechanisms with Bluetooth Low Energy (BLE) technology. BLE is a simpler, more cost-effective wireless communication standard that can be implemented using readily available modules, thereby reducing system cost while maintaining authentication security through the use of cryptographic keys and secure memory elements.
3Ease of manufacture
If BLE beacon packets are used for authentication, then cost-effectiveness and energy efficiency are improved, but vulnerability to relay attacks increases
Solution Approach 1:
The patent implements preliminary authentication measures by equipping the ID transmitter with a switching apparatus that requires active user engagement (such as pressing a button or performing a gesture) before authentication occurs. This preliminary action ensures that the authentication is initiated by the legitimate user and not intercepted by relay attacks, while still using cost-effective BLE beacon packets for the actual authentication communication.
Data Source
AI summary
An ID transmitter for authentication on an access control unit of a physical unit. The ID transmitter may include an ID transmitter-BLE interface with an antenna, a microcontroller, a switching apparatus and a battery compartment to accommodate a battery. The microcontroller is arranged, in response to the receipt of the switching signal, to trigger the sending of an authentication signal that includes authentication information, and that is configured as a BLE beacon data packet. A set for assembling an ID transmitter and a system including an ID transmitter and a physical unit are disclosed.