Google Tested Biometric Password Auth for Chrome

The browser feature aims to secure autofill credentials on unlocked Android devices via identity verification.

Updated on Oct. 2, 2026 in Cybersecurity

Isometric editorial illustration of a metallic fingerprint sensor embedded in a dark geometric block, representing secure digital authentication. — Google is testing a new biometric re-authentication feature for Chrome on Android to enhance security for saved password autofill. AI Illustration. Upload story photo >

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Would you prefer using biometric authentication before your browser automatically fills in your passwords?

Google has begun testing a biometric re-authentication requirement for Chrome on Android to secure saved password autofill. The experimental feature is currently available in Chrome Canary version 157.0.8083.0.

Why it matters

This change targets the security vulnerability created when users share unlocked mobile devices with others. It adds a layer of identity verification to existing credential management workflows.

The biometric re-authentication flag is present in Chrome Canary version 157.0.8083.0, following its removal from previous Dev and Canary builds. The feature requires users to enable the specific toggle in chrome://flags to activate the biometric prompt.

The players

Google

A global technology company known for developing the Chrome web browser, the Android operating system, and a wide array of cloud and AI-driven software services.

The details

The mechanism functions by triggering a biometric authentication prompt immediately before the browser populates saved credentials. By requiring this validation, the browser prevents unauthorized autofill on devices that are already unlocked and in use. This update follows Google's ongoing experimentation with biometric credential security that began in September 2024.

September 2024: Google began experimenting with biometric password authentication.
August 2025: The feature reached development and Canary versions of Chrome.
October 2, 2026: Details on the latest feature test were reported.

The Tech Race

This experimental feature updates the security model for Chrome's existing password autofill system. It reflects a broader industry shift toward layering hardware-backed biometrics over browser-based credential managers.

Users can test the feature by toggling the biometric re-authentication flag within the chrome://flags menu on their Android devices. Its availability in the stable version of Chrome is not yet scheduled.

The takeaway

This test signals a shift toward making browser-based autofill resilient to device-sharing risks. Watch for updates in future Chrome release notes to see if the biometric requirement migrates from Canary builds to the general release.