Touchless Wi-Fi CSI Authentication Without Physical Credentials
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Solution Overview
Problem
Conventional authentication methods require users to carry and present physical identification credentials, which can be burdensome and prone to loss or forgery, and are not well-suited for efficient access to secured resources.
Innovation Solution
A touchless authentication system using Wi-Fi-based Channel State Information (CSI) to generate unique biometric signals from a person's gait and motion, eliminating the need for physical tokens by leveraging ubiquitous Wi-Fi devices to passively verify identity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional authentication methods using physical identification credentials are used, then users can prove their identity, but the process becomes time-consuming and burdensome for both users and organizations
Solution Approach 1:
The patent replaces mechanical authentication systems (physical ID cards, key cards, fingerprints) with a wireless signal-based authentication system. The system captures Channel State Information (CSI) from Wi-Fi signals that naturally interact with the user's body, converting physical presence into digital authentication data without requiring manual intervention or physical credentials.
Solution Approach 2:
The authentication system operates passively by automatically capturing CSI data from Wi-Fi signals in the environment. Users simply need to be present in the sensor zone; the system autonomously extracts biometric features from their body's interaction with wireless signals and performs authentication without requiring users to actively present credentials or engage in authentication actions.
2Reliability
If users are required to carry and present identification credentials, then authentication can be performed, but users experience burden and risk of loss or forgery
Solution Approach 1:
The patent eliminates the need for physical authentication credentials by substituting them with a system that captures electromagnetic interactions between Wi-Fi signals and the user's body. The CSI data extracted from these signals serves as a credential-free authentication mechanism that cannot be lost, stolen, or forged in traditional senses.
Solution Approach 2:
The system creates a digital representation (copy) of the user's physical presence through CSI data. This digital copy captures the unique electromagnetic interaction pattern of the user's body with Wi-Fi signals, serving as an immutable authentication identifier that replaces physical credentials without requiring the user to carry or present anything.
3Reliability
If physical authentication credentials are used, then identity verification is possible, but the system requires additional hardware and infrastructure
Solution Approach 1:
The patent leverages the ubiquity of Wi-Fi infrastructure to perform authentication. Existing Wi-Fi access points and devices, already present in most environments, are repurposed to capture CSI data for authentication purposes. This eliminates the need for dedicated authentication hardware while maintaining authentication capability.
Solution Approach 2:
The system utilizes environmental Wi-Fi signals that already exist in the space for their primary communication purpose. These signals simultaneously serve dual functions: maintaining wireless connectivity and providing authentication data through their interaction with users' bodies. No additional infrastructure is required beyond what is already present for normal Wi-Fi operation.
Data Source
AI summary
A touchless method and system of performing an authentication of a person in order to permit access to a secured resource is disclosed. The system and method are configured to collect channel state information associated with a person as they pass through a sensor zone and identify a biometric signal for the person. The system detects whether there is a match between the biometric signal and any biometric signals previously collected and stored in a database. If there is a match, the system verifies an identity of the person and can be configured to automatically grant the person access to one or more services, features, or locations for which he or she is authorized based on the authentication.