Password less Sign-In using Supabase in Flutterflow

Passwordless Sign-In is a modern authentication method that allows users to log in using an email or phone without requiring a password. This enhances security while improving user convenience. Supabase, an open-source Backend-as-a-Service (BaaS), provides seamless authentication, and FlutterFlow, a low-code development platform, integrates with Supabase to enable passwordless authentication in Flutter apps.

Implementation Steps

1. Setting Up Supabase

• Create a new project in the Supabase console.

• Enable authentication by selecting email or phone as the sign-in method.

• Configure the authentication settings to support magic links.

2. Integrating Supabase with FlutterFlow

• Create a new project in FlutterFlow.

• Enable authentication and select Supabase as the authentication provider.

• Configure API keys by adding the Supabase API URL and Anon Key in the settings.

• Set up login and entry pages to handle authentication.

3. Configuring Authentication & Deep Linking

• Add the necessary authentication URLs from the FlutterFlow project into the Supabase settings.

• Set up a deep link for email authentication to redirect users back to the app after login.

4. Implementing Magic Link Authentication

• Use Supabase’s signInWithOtp function to send a login link to the user’s email.

• When the user clicks the link, they are automatically authenticated and redirected to the app.

Future signinWithMagicLink(String email) async {

await supabase.auth.signInWithOtp(

email: email,

shouldCreateUser: true,

emailRedirectTo: 'YourDeepLink://YourDeepLink.com/HomePage'

);

}

Benefits of Passwordless Authentication

• Enhanced Security – Eliminates the risk of password theft.

• Better User Experience – No need to remember passwords.

• Seamless Integration – Easily implemented with Supabase and FlutterFlow.

Conclusion

Using Supabase for passwordless authentication in FlutterFlow is a modern, secure, and user-friendly approach to authentication. By leveraging magic links, developers can create a seamless sign-in experience for users while maintaining strong security standards.

🔗 For a detailed guide, visit:

https://www.flutterflowdevs.com/blog/password-less-sign-in-using-supabase-in-flutterflow