Secure your Flutter Web app using Multi factor authentication
summary
Builds MFA for a Flutter Web research app that shares a Firebase backend, first implementing a workaround that uses Firebase + Identity Platform to enroll phones, require reCAPTCHA, exchange session info and generate a custom Firebase token, and deploys Cloud Functions for SMS verification to finish sign‑in. The improvised flow works but is long; Firebase now supports native MFA which reduces the steps to standard email/password plus phone OTP verification and simpler token handling.
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chapters (7)
- 0:00Introduction and community
- 2:52Importance of app security
- 6:05Authentication vs authorization
- 9:31MFA implementation options
- 13:39Firebase challenge and solution
- 17:07Implementing complex MFA flows
- 21:04Native Firebase MFA support
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