[Enhancement] Biometric re-enrollment flow missing — users locked out after fingerprint change#883
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Menjay7 wants to merge 1 commit into
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[Enhancement] Biometric re-enrollment flow missing — users locked out after fingerprint change#883Menjay7 wants to merge 1 commit into
Menjay7 wants to merge 1 commit into
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…after fingerprint change
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Summary
Introduces a biometric re-enrollment flow to prevent users from being locked out after adding, removing, or updating fingerprints on their device. The enhancement detects biometric enrollment changes and guides users through securely re-enabling biometric authentication.
Problem
Currently, when a user modifies their registered fingerprints (or other biometric credentials), biometric authentication becomes invalid. Without a recovery flow, users who rely on biometrics may be unable to sign in until they manually troubleshoot the issue.
Solution
Detect biometric enrollment changes.
Prompt users to authenticate using their primary credential (password, PIN, or passcode).
Guide users through biometric re-enrollment.
Re-enable biometric login upon successful verification.
Display clear error messages and recovery instructions if re-enrollment fails.
Changes
Add biometric enrollment change detection.
Implement secure biometric re-enrollment workflow.
Add fallback authentication before re-enrollment.
Improve user-facing messaging for biometric invalidation.
Add analytics/logging for biometric re-enrollment events.
Add unit and integration tests covering successful and failed re-enrollment scenarios.
Benefits
Prevents users from being locked out after biometric changes.
Improves account recovery experience.
Maintains strong security by requiring primary authentication before re-enrollment.
Reduces support requests related to biometric login failures.
Testing
Verified re-enrollment after adding a new fingerprint.
Verified re-enrollment after removing existing fingerprints.
Verified re-enrollment after replacing all enrolled biometrics.
Confirmed fallback authentication is required before re-enrollment.
Confirmed existing biometric authentication behavior remains unchanged for users without enrollment changes.
Closed #823