Biometric Reference Template Record Tokenization
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Solution Overview
Problem
Current biometric security techniques face challenges in protecting the confidentiality of biometric data, particularly when insiders gain access to biometric reference templates, and require cumbersome key management systems, making it impractical to update processing technologies without re-enrolling users.
Innovation Solution
The implementation of tokenization techniques to generate and store biometric reference template records, which obfuscates sensitive biometric data using tokens, allowing secure transfer and storage while enabling updates without re-enrollment, using a tokenization schema and digital signatures to ensure data integrity and authenticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional encryption and key management systems are used to protect biometric data, then data security is improved, but system complexity and key management burden increase significantly
Solution Approach 1:
The patent introduces a tokenization intermediary layer that sits between the biometric data and the storage system. Instead of directly encrypting biometric templates with complex key management, the system uses tokens as intermediaries to represent and protect the data, significantly reducing key management complexity while maintaining security
Solution Approach 2:
The patent creates tokenized copies of biometric data that can be stored and processed without exposing the original sensitive information. These token copies maintain the necessary functionality for authentication while eliminating the need for complex key management of the original biometric templates
2Measurement precision
If biometric reference templates are updated with new processing technologies, then authentication accuracy is improved, but re-enrollment of users is required which reduces productivity
Solution Approach 1:
The patent implements a dynamic tokenization system where tokens can be regenerated and reassigned without requiring users to re-enroll. The system dynamically updates the underlying biometric processing technologies while maintaining the same user-facing token interface, allowing accuracy improvements without productivity loss
Solution Approach 2:
The patent performs preliminary tokenization of biometric data during initial enrollment, creating a flexible token structure that can accommodate future processing technology updates. This preliminary action establishes a foundation that enables later technology upgrades without requiring user re-enrollment
3Speed
If biometric reference templates are stored in accessible locations for authentication, then authentication speed is improved, but vulnerability to insider threats and data breaches increases
Solution Approach 1:
The patent applies different quality levels of protection to different parts of the biometric system. The tokenized data stored in accessible locations has sufficient protection for fast authentication, while the original biometric templates remain in highly protected, isolated environments. This local differentiation of security qualities enables both speed and security
Data Source
AI summary
A method includes receiving an update biometric reference sample and a user identifier by a computing system and retrieving a previous biometric reference template record in a storage location based on the user identifier by the computing system. The previous biometric reference template record includes a previous biometric reference template generated using a previous biometric reference sample. The method further includes comparing the update biometric reference sample to the previous biometric reference template by the computing system and, responsive to determining that a biometric data type of the update biometric reference sample is different than that of the previous biometric reference template, generating an update biometric reference template by the computing system. The method further includes generating an update biometric reference template record by the computing system. The method further includes receiving comparing the update biometric reference sample to the biometric authentication sample by the computing system.