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Be Prompted to Re-Authenticate When My Session Becomes Sensitive

Not all app actions carry the same sensitivity. Registering a 30-minute activity is low-risk; accessing an encrypted contact assignment with personal health details is high-risk. The biometric prompt overlay should be triggerable on a per-action basis for elevated-sensitivity operations, rather than only at app launch. This step-up authentication pattern is especially important for Blindeforbundet's encrypted contact assignment workflows and NHF's sensitive field display requirements. The biometric prompt must be dismissible with a fallback to password for accessibility.

MEDIUM story-biometric-session-authentication-coordinator-005 5 pts
5
Story Points
Medium
Priority
Biometric Session Authentication
Feature

User Story

As a Coordinator
I want to be asked to re-authenticate with biometrics when I access sensitive operations like viewing encrypted contact details or submitting expense claims
So that the app protects sensitive data while still allowing low-friction access to routine registration tasks, without requiring me to log in and out repeatedly

Acceptance Criteria

  • Given I am in an active session and navigate to a screen that displays encrypted personal data, When the screen loads, Then a biometric prompt overlay is displayed before the sensitive content is revealed
  • Given the biometric step-up prompt is shown, When I authenticate successfully, Then the sensitive content is decrypted and displayed immediately
  • Given the biometric step-up prompt is shown, When I cancel or fail biometric authentication, Then the sensitive content remains hidden and I am offered a password fallback or navigation back
  • Given I am using a screen reader, When the biometric step-up prompt appears, Then the prompt is announced with appropriate semantics and focus is managed correctly
  • Given biometric step-up is triggered, When I complete authentication, Then the step-up result is cached for the current screen session so I am not re-prompted within the same navigation context
  • Given biometric hardware is unavailable, When a sensitive screen is accessed, Then I am prompted to enter my password as the step-up authentication method instead

Business Value

Blindeforbundet's encrypted contact assignment feature requires sending sensitive personal information (names, addresses, health summaries) to peer mentors. NHF requires a warning when sensitive fields are read aloud by screen readers. Step-up biometric authentication satisfies these data protection requirements without forcing full logout and re-login, preserving the low-friction user experience. This also supports future GDPR compliance for sensitive data access logging.

Components

Dependencies

Biometric Session Authentication
Related Feature
Coordinator
User Role