How does authentication work in web applications?

How does authentication work in web applications?

Authentication is the process of verifying the identity of a user or system. In web applications, it typically involves users providing credentials, like a username and password, to gain access.

What are some common authentication methods?

Common methods include password-based authentication, two-factor authentication (2FA), biometric authentication, and OAuth.

What is two-factor authentication?

Two-factor authentication (2FA) adds an extra layer of security by requiring not just a password but also a second factor, like a text message code.

How can I implement authentication in my app?

You can implement authentication using libraries like Passport.js for Node.js, or Firebase Authentication for a more straightforward solution.