How will Firebase handle passwordless authentication without Dynamic Links?

Question

Setting up a new React Native project with Firebase passwordless authentication, I see this warning:

Note: Firebase Dynamic Links is deprecated and should not be used in new projects. The service will shut down on August 25, 2025. You will have at least 12 months from the announcement date to migrate.

See: https://firebase.google.com/support/dynamic-links-faq

In the future, will passwordless authentication instead leverage App Links and Universal Links?

From the perspective of a developer accustomed to doing this with Dynamic Links, and reading the standard docs for implementing the email auth link in Android or iOS, I'm confused how to proceed implementing passwordless authentication in a new project.

Answer 1

firebaser here

Thanks for the raising the question. Firebase Authentication email link auth indeed currently uses Firebase Dynamic Links to customize Authentication links.

For now, your email sign-in will continue to work and we will have an update in place to continue email sign-in functionality by the time the Firebase Dynamic Links service is shut down.

We've updated the FAQ doc linked above to reflect that.