Multi-Device Authentication Using UHF and LF Distance Measurements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing authentication systems only consider single distance measurements for service operations, failing to provide secure authentication based on multiple distance measurements.
Innovation Solution
An authentication system comprising multiple communication devices and a control device that performs wireless communication to authenticate based on multiple distance measurements, using a combination of UHF and LF band signals for secure two-step authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single distance measurement is used for authentication, then device complexity is reduced, but authentication security is insufficient
Solution Approach 1:
The authentication process is divided into two separate steps: first measuring distance with UHF band communication devices, then measuring distance with LF band communication devices. This segmentation allows each measurement to contribute independently to the final authentication decision, enhancing security while maintaining manageable system complexity through modular processing
Solution Approach 2:
The system transitions from single-dimension authentication (one distance measurement) to multi-dimensional authentication by incorporating multiple distance measurements from different communication devices operating in different frequency bands. This dimensional expansion creates a more robust authentication basis
2Reliability
If multiple communication devices perform wireless communication, then authentication reliability is improved, but communication time increases
Solution Approach 1:
The system implements periodic communication cycles where multiple distance measurements are performed in sequence - first UHF band measurements, then LF band measurements. This periodic structure allows the system to gather multiple data points reliably while maintaining predictable timing and preventing excessive authentication delays
Data Source
AI summary
An authentication system comprising: a plurality of communication devices; and a control device configured to execute a process on a basis of information obtained through wireless communication between the respective communication devices and another communication device that is different from the plurality of communication devices, wherein each of the plurality of communication devices includes a wireless communication section configured to perform wireless communication with the other communication device, and the control device determines that the other communication device is successfully authenticated in a case where any one of a plurality of pieces of information regarding distances between the respective communication devices and the other communication device satisfies a designated condition on a basis of the pieces of information regarding the distances obtained through the wireless communication between the respective communication devices and the other communication device.