Biometric authentication template update system

ChangeBridge: Patent Grants - Networking (H04L)

Published March 31st, 2026

Detected March 31st, 2026

Summary

USPTO granted Patent No. US12591648B2 to NEC Corporation covering a biometric authentication system that updates biometric templates without requiring user re-registration. The patent includes an update value generation unit that synchronizes updates to both biometric templates and associated verification keys. The patent contains 13 claims and covers CPC classifications G06F 21/32 and H04L 9/32.

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What changed

USPTO granted Patent US12591648B2 to NEC Corporation on March 31, 2026. The patent covers a biometric authentication system that solves the conventional problem of users having to re-register biometric information when templates become outdated. The system includes an update value generation unit, a first update processing unit for updating biometric templates, and a second update processing unit for synchronizing verification key updates using the same update value.

Patent grants are informational documents that do not impose compliance obligations on third parties. Technology companies developing biometric authentication systems may wish to review this patent to understand NEC Corporation's intellectual property position in template update technology. The patent filing date was January 29, 2021 (Application No. 18274667).

Source document (simplified)

← USPTO Patent Grants

Biometric authentication system, template updating method therefor, storage medium, biometric authentication client device, and biometric authentication server device

Grant US12591648B2 Kind: B2 Mar 31, 2026

Assignee

NEC CORPORATION

Inventors

Masahiro Nara, Toshihiko Okamura, Toshiyuki Isshiki, Kengo Mori, Hiroto Tamiya

Abstract

A conventional biometric authentication system has been time-consuming and labor-intensive for users since the users are requested to re-register their biometric information. According to an aspect of the present disclosure, a biometric authentication system includes an update value generation unit configured to generate an update value, a first update processing unit configured to update, using the update value, a template generated based on biometric information, and a second update processing unit configured to update, using the update value, a verification key generated along with the template based on the biometric information using the update value.