Tag
#authentication
Face ID Biometric Login Setup with Local App State (SwiftUI)
Wire Face ID login in SwiftUI: LocalAuthentication for the biometric check, one in-memory isUnlocked flag for state, and the session token in the Keychain.
How to Fix the Google Sign-In Popup Freeze on iOS
The Google Sign-In popup freezes on iOS when the auth session is not retained or the presenting controller is wrong. Here is the reliable fix and why it happens.
BankID Sweden Login Animation in React Native
Build the BankID Sweden login animation in React Native with Reanimated while keeping real auth in the official, certified flow. Here is the code and the rules.
Sign in with Apple: Hide My Email Forwarder Setup
Emails to privaterelay.appleid.com bounce until you register your sending domains and pass SPF. Here is the full Hide My Email forwarder setup for iOS apps.
FranceConnect Mobile Login Flow UI in React Native
Approved providers only, the system browser always, and a button that is a contract: the national-ID login flow done without the phishing shape.
Google Sign-In Button in SwiftUI: Code and the Contracts
The branding rules, the Apple 4.8 sibling requirement, and the ID-token verification that makes it real: the Google button without the rejection.
Can CatDoes Manage User Authentication Security?
Yes, CatDoes auto-provisions Supabase and generates auth flows. But security is shared: here is what it handles and the access rules you must verify yourself.
Face ID Biometric Login Screen in SwiftUI: Done Right
Face ID gates local access, it does not replace server auth. Here is the SwiftUI pattern: LocalAuthentication, a Keychain-stored token, and a real fallback.
Authentication Screen Component in Next.js: Do It Right
Build a Next.js auth screen the safe way: start from a free VP0 design, generate the UI, then put the security where it belongs, on the server, not the component.
Apple Sign In Required Rejection: Fix It in SwiftUI
Rejected because Sign in with Apple is missing? If you offer Google or Facebook login, Apple requires it too. Here is the SwiftUI fix that clears review.
DigiD Login Integration UI Pattern for iOS, Free
Building a DigiD style login integration UI? Build the redirect-to-official-auth pattern from a free template, the right and safe way, with Claude Code or Cursor.
Firebase Auth Not Working in Rork? Here's the Fix
Firebase Auth failing in your Rork app? It is almost always config, the Firebase setup, init, or redirect, not your code. Here are the causes and fixes.
Expo React Native Face ID Login Boilerplate, Free
Add Face ID login to an Expo React Native app from a free template. Biometric unlock done right, with a passcode fallback, using Claude Code or Cursor.
Fix Sign in with Apple Rejections: A Config Checklist
AI app rejected over Sign in with Apple? Run this native login config checklist: capability, scopes, equal prominence, and the rules that clear review.
Supabase Sign-Up Flow UI for iOS, Free Components
Copy-paste a Supabase sign-up flow UI for iOS from a free template. Email, social, and verification screens wired to Supabase auth with Claude Code or Cursor.
Sign in with Apple UI Guidelines, Built in Figma
Sign in with Apple has strict button and flow rules. Build a compliant sign-in from a free VP0 design, follow guideline 4.8, and cut account-creation friction.
OTP SMS Verification Screen UI for Mobile, Done Well
A good OTP screen autofills the code and handles every error. Build a one-time-code verification UI from a free VP0 design, and know when a passkey is safer.
Passkey Creation UI With Biometrics, Done Right
Passkeys replace passwords with Face ID and Touch ID. Build a clear passkey creation flow from a free VP0 design and wire it with Apple's authentication APIs.