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Passwords are old. Modern patterns make apps safer. They remove friction for your users.
Choose your strategy based on security and experience.
Passkeys
- Use biometrics or PINs.
- Stop phishing attacks.
- No passwords to leak in breaches.
- Sync across devices.
Magic Links
- Send a one-time link to email.
- Remove password management.
- Risk depends on email security.
Multi-Factor Authentication (MFA)
- Add a second check.
- TOTP offers a good balance.
- Hardware keys are strongest.
- Avoid SMS due to SIM swaps.
Social Login
- Fast sign-up using Google or GitHub.
- Increases conversion rates.
- Trust the identity provider.
Risk-Based Strategy
- Use one factor for low-risk tasks.
- Require MFA for sensitive data.
- Re-authenticate for password changes.
Engineering Advice
- Plan on a whiteboard before coding.
- Build the happy path first.
- Stop over-engineering for scale you do not have.
- Use boring technology your team knows.
Operations
- Use structured logs with trace IDs.
- Set up RED metrics.
- Add idempotency keys to stop duplicate requests.
- Implement backpressure to prevent system crashes.
Your Action Plan
- This week: Audit your backend for these patterns.
- This month: Try one new pattern.
- This quarter: Automate your deployments.