Authentication That ScalesWith Your Users
Email & password login, social authentication, role-based access control, and secure session management — all built in. Stop building auth from scratch and focus on your product.
How Authentication Works
Users authenticate via email, social providers, or custom methods. Back4app validates credentials, creates secure sessions, and manages permissions automatically.
Everything You Need for User Management
From simple email login to complex enterprise SSO — Back4app provides the building blocks for any authentication flow.
One-Click Social Authentication
Let users sign in with accounts they already trust. Back4app provides built-in adapters for major identity providers — no OAuth complexity, just simple SDK calls.
- Google, Facebook, Apple, GitHub, Twitter adapters
- Automatic account linking for existing users
- Profile data sync from social providers
- Custom adapter support for enterprise SSO
- Works on iOS, Android, and Web
Turn visitors into users with one-click authentication.
Fine-Grained Access Control
Control exactly who can read, write, or modify data. Back4app offers both object-level ACLs and class-level permissions, with a powerful role hierarchy for complex organizations.
- ACLs (Access Control Lists) per object
- CLPs (Class Level Permissions) for schema-wide rules
- Hierarchical roles with inheritance
- Protected fields that only server-side code can modify
- Public, authenticated, or role-specific access
Ship faster knowing every request is authorized.
Secure Sessions That Just Work
Back4app handles session tokens, expiration, and refresh automatically. Your users stay logged in securely without you writing session management code.
- Automatic token generation and validation
- Configurable session duration and expiration
- Multi-device session tracking
- Secure logout and session revocation
- Automatic reconnection handling in SDKs
Zero session management code required.
Enterprise-Grade Password Handling
Passwords are never stored in plain text. Back4app uses bcrypt hashing, supports email verification, and provides built-in password reset flows.
- Automatic bcrypt password hashing
- Email verification with customizable templates
- Password reset flow via email
- Password policies (length, complexity)
- Account lockout after failed attempts
Security best practices, built in.
Manage Users with AI
Create roles, assign permissions, query users, and manage sessions using natural language. Connect your favorite AI IDE via MCP for seamless user management.
Implement Auth in Minutes
Simple SDK methods for sign-up, login, and session management. Works on every platform.
JavaScript
Web & Node.js// Sign up a new user
const user = new Parse.User();
user.set("username", "[email protected]");
user.set("email", "[email protected]");
user.set("password", "securePassword123");
await user.signUp();
// Log in existing user
const loggedIn = await Parse.User.logIn("[email protected]", "securePassword123");
// Social login with Google
await Parse.User.logInWith("google", {
authData: { id: googleId, access_token: googleToken }
});
// Check current user
const currentUser = Parse.User.current();
if (currentUser) {
console.log("Logged in as:", currentUser.get("username"));
}Authentication for Every App
From consumer apps to enterprise platforms, Back4app authentication scales with your needs.
Consumer Apps (B2C)
Social login for quick sign-up, email verification, and seamless mobile authentication for millions of users.
SaaS Platforms (B2B)
Team management with roles, organization-level permissions, and SSO integration for enterprise customers.
Internal Tools
Employee authentication, department-based access control, and audit logging.
Mobile Apps
Biometric login support, secure token storage, and offline authentication for iOS and Android.
E-Commerce
Guest checkout with anonymous users, account conversion, and secure payment integration.
Gaming
Anonymous guest play, account linking, cross-platform progression, and leaderboard access control.
Frequently Asked Questions
What authentication methods does Back4app support?
How does role-based access control (RBAC) work in Back4app?
Is user data encrypted and secure?
Can I implement email verification and password reset?
What happens when a user's session expires?
Can I use Back4app authentication with AI tools?
Secure Authentication, Simplified
Stop building auth from scratch. Get started with enterprise-grade authentication in minutes. No credit card required.