Mobile Access Control With Proximity-Gated Wireless Confirmation
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Solution Overview
Problem
Existing access control systems using mobile devices with NFC interfaces are limited and risk unauthorized access due to the extended communication range of other radio-based communication modules, such as Bluetooth and WLAN, which can allow unauthorized users within the larger range to gain access.
Innovation Solution
An electronic access control device with a radio communication module for direct wireless communication with mobile devices, utilizing a Bluetooth transceiver for short-range communication and an RFID reader for proximity detection, combined with a controller to verify signal strength and user confirmation, ensuring secure access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If radio-based communication modules with extended communication range (Bluetooth, WLAN) are used for exchanging access rights, then devices without NFC interfaces can be supported, but unauthorized users within the extended range can gain erroneous access
Solution Approach 1:
The patent divides the authentication process into two separate stages: first, proximity verification using NFC interface to confirm the mobile device is in immediate proximity, and second, data exchange using radio-based communication modules. This segmentation ensures that the extended range of Bluetooth/WLAN does not compromise security, as the NFC proximity check acts as a gatekeeper before allowing communication over the extended range.
Solution Approach 2:
The patent introduces an intermediary verification mechanism where the access control device checks whether the mobile device is within a defined proximity range using NFC technology before establishing communication through the extended-range radio modules. This intermediary step mediates between the need for broad device compatibility and the requirement for secure access control.
2Reliability
If NFC interface is used for access control, then unauthorized access is prevented due to short communication range, but devices without NFC interface cannot be used
Solution Approach 1:
The patent makes the access control device universal by equipping it with multiple communication interfaces: both NFC interface for secure proximity-based authentication and radio-based communication modules (Bluetooth, WLAN) for data exchange. This multi-functionality allows the system to work with mobile devices regardless of whether they have NFC interfaces, while maintaining security through the NFC proximity verification step.
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
Ensures secure access control by verifying user confirmation and proximity, reducing the risk of unauthorized access, and supporting devices without NFC interfaces while maintaining the advantages of NFC-based systems.
Implementation Method 1
an RFID reader for proximity detection
Data Source
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AI summary
An electronic access control device (1) comprises a radio communication module and a controller configured to check (S30) whether a signal strength of a mobile device (2) is above a signal strength threshold indicative of the mobile device (2) being located within a close range, and, if that is the case, to transmit (S31) an executable access confirmation module via a direct wireless communication link to the mobile device (2). The executable access confirmation module comprises computer program code configured to control a processor of the mobile device (2) to receive (S33) from a user of the mobile device (2) a confirmation instruction and to transmit (S34) to the access control device (1) a confirmation message, responsive to the confirmation instruction. Upon reception of a confirmation message from the mobile device (2), the controller of the electronic access control device (1) generates an access control signal.