Dual Fingerprint Sensor Credential Transfer

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Solution Overview

Problem

Current methods for transferring or adding user credentials using fingerprint verification are cumbersome and insecure, particularly when associating credentials with a third party, as they require biometric owner presence checks, which can hinder sharing or resale of devices.

Innovation Solution

Incorporating multiple fingerprint sensors into a smart card or credential authorization device to facilitate a fingerprint reassignment protocol, allowing simultaneous or concurrent scanning of the current and prospective biometric owners' fingerprints, with verified data stored on the device to transfer or add credentials securely.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If multiple fingerprint sensors are used to enable credential transfer, then ease of operation is improved, but device complexity increases

Engineering Contradiction:

Improvecredential transfer processVSAvoidnumber of fingerprint sensors

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent divides the credential verification process into two distinct segments: one fingerprint sensor verifies the current owner's identity, while the other sensor captures the new user's fingerprint. This segmentation allows simultaneous independent operation of verification and credential capture, simplifying the overall transfer process while maintaining security through dual-sensor architecture.

Inventive Principle:

Principle #1Segmentation

2Reliability

If biometric owner presence check is required for security, then reliability is improved, but ease of operation deteriorates

Engineering Contradiction:

Improvecredential securityVSAvoidcredential sharing process

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system performs preliminary verification of the current owner's presence through one fingerprint sensor before proceeding with the credential transfer. This preliminary action ensures security requirements are met upfront, allowing the second sensor to then freely capture the new user's biometric data without additional security hurdles, thus maintaining reliability while improving ease of operation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces a dual-sensor system where one sensor acts as an intermediary verification mechanism for the current owner, while the other sensor serves as the credential capture interface for the new user. This intermediary approach maintains security through presence verification while enabling seamless credential transfer to third parties.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11727097B2Dual fingerprint sensor credentialing

Publication Date: 2023.08.15 INFINEON TECHNOLOGIES AG

AI summary

A credential authorization device having a first fingerprint sensor, configured to detect first sensor data representing one or more elements of a finger from a first person in contact with the first fingerprint sensor; a second fingerprint sensor, configured to detect second sensor data representing one or more elements of a finger from a second person in contact with the second fingerprint sensor; and one or more processors, configured to determine an authorization for a transaction based on an authentication of the first sensor data and the second sensor data.