Introduction 
Sign In with Farcaster (SIWF) is way for users to sign into any app using their Farcaster identity.
When a user signs into your application with Farcaster you'll be able to use public social data like their social graph and profile information to provide a streamlined onboarding experience and social-powered features.
How does it work? 
- Show a "Sign in with Farcaster" button to the user.
 - Wait for the user to click, scan a QR code and approve the request in Warpcast.
 - Receive and verify a signature from Warpcast.
 - Show the logged in user's profile picture and username.
 
Next Steps 
- integrate SIWF to your app today with AuthKit.
 - read about the underlying standard in FIP-11: Sign In With Farcaster