🔐 How do apps let you login using Google or Facebook?
Ever wondered how “Continue with Google” logs you in instantly without sharing your password? 😳
It works using modern authentication protocols like OAuth 2.0.
In this video, we explain:
🔥 OAuth 2.0 Authentication
🔑 Access Tokens
🛡️ Secure Login Systems
⚡ Third-party Authentication Flow
🔐 Token-based identity verification
How it works:
1. User clicks “Login with Google/Facebook”
2. App redirects user to authentication provider
3. Provider verifies credentials
4. Provider returns a secure token
5. App trusts the token and logs user in
This means your password is never shared with the third-party app.
📌 Concepts covered:
OAuth 2.0
Authentication Systems
Token-based Security
Secure Login Architecture
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#OAuth #Authentication #CyberSecurity #GoogleLogin #FacebookLogin #SystemDesign #SoftwareEngineering #TechExplained #InterviewPreparation #interviewprep