Wearable Defibrillator NFC Tag Security for Wireless Programming
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Solution Overview
Problem
Wearable cardioverter defibrillator (WCD) systems face challenges with inadvertent or malicious programming due to insecure communication methods, which can lead to incorrect device connections and security risks, particularly in wireless configurations.
Innovation Solution
Incorporating a Near Field Communications (NFC) tag that stores access information for secure wireless communication, requiring close proximity for device pairing and eliminating the need for manual entry of connectivity data, thus enhancing security and reducing the risk of incorrect programming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used for programming WCD system, then ease of operation is improved, but security and reliability deteriorate due to inadvertent or malicious programming
Solution Approach 1:
The patent introduces an NFC tag as an intermediary component that mediates between the programming device and the WCD system. The NFC tag stores encrypted communication credentials and must be physically present and activated to enable wireless programming, thus preventing inadvertent or malicious programming while maintaining ease of operation when properly authenticated
2Reliability
If manual entry of connectivity data is required, then security is improved, but ease of operation deteriorates due to cumbersome workflow
Solution Approach 1:
The system implements self-service authentication where the NFC tag automatically provides encrypted communication credentials to authorized devices without requiring manual entry of passwords or connection strings. The tag itself serves the function of security verification, eliminating the need for human operators to handle sensitive authentication data while maintaining secure connections
3Reliability
If physical cable connection is used for programming, then security is improved, but ease of operation deteriorates due to physical limitations and tripping hazards
Solution Approach 1:
The patent replaces the mechanical cable connection system with a wireless communication system authenticated by NFC. This substitution eliminates the physical cable and associated hazards while maintaining security through the NFC-based authentication mechanism, allowing programmers to work freely without physical constraints
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 NFC tag-based system ensures secure and accurate pairing of WCD components, preventing malicious attacks and reducing the risk of incorrect programming, while eliminating the need for physical cables and manual data entry, thereby improving user safety and workflow efficiency.
Implementation Method 1
Incorporating a Near Field Communications (NFC) tag that stores access information for secure wireless communication
Data Source
AI summary
A wearable cardioverter defibrillator (WCD) system includes a processor, a memory, a wireless communication module (DWCM), and an NFC tag that stores information for how an accessing device may access the DWCM wirelessly. An accessing device such as a defibrillator configurator with an NFC reader may read the NFC tag of the WCD system, if it has adequate permission to do so. Upon so reading, the accessing device will know how to address the DWCM wirelessly, and thus install or update configuration data, software updates, or request memory downloads from operations. The use of the NFC tag requires close proximity, which hampers both inadvertently programming the wrong WCD system, plus a WCD system being attacked maliciously.