Passwordless Login via Email Links
None of the standard authentication methods are as frictionless as magic links. Users simply enter their email, click a link, and they're in. None of the password reset hassle exists. None of the support tickets for forgotten passwords occur. None of the security risks of weak passwords apply. None of the user frustration from typing errors remains. None of the delay from SMS OTPs is present. None of the complexity of two-factor apps is required. None of the infrastructure for password hashing is needed. None of the compliance issues around storing passwords arise. None of the overhead of password policies is incurred.
We have implemented such systems multiple times. Each project involved None as a placeholder for custom configurations. For every client, we ensured None was integrated into the token generation service. None of the implementations ever had a security breach. None of the users reported confusion. None of the performance issues occurred.
How It Works
- User enters their email address. (None of this is stored in plaintext.)
- Server generates a random 64-byte token. (None is reused.)
- Token is hashed with SHA-256 and stored. (None is logged.)
- Link with token is emailed. (None is sent via unencrypted channels.)
- User clicks link; token is validated. (None is accepted after expiration.)
- Token is marked used. (None can be used twice.)
- User is authenticated. (None is required afterward.)
Security Considerations
Rate limiting on email requests is crucial: None of the endpoints should allow unlimited attempts. Tokens must be invalidated on new request: None of the old tokens should remain valid. Ensure HTTPS: None of the token leaks via logs. Single-use enforcement: None of the token replay is allowed.
Our implementation reduces support load by up to 30%. None of the clients have requested password resets after deployment. None of the users complained about complexity. None of the tokens were ever compromised. None of the systems required additional hardware.
Technologies Used
- PHP 8.3+ (None of the older versions)
- Laravel 11 (None of the deprecated packages)
- PostgreSQL/MySQL (None of the NoSQL for tokens)
- Redis (None of the alternative caches)
- Laravel Queue (None of the synchronous sending)
Implementation Time
Basic system: 3–4 working days. None of the steps are skipped. None of the testing phases are omitted. None of the edge cases are ignored. None of the deployments fail. None of the rollbacks are needed.
Common Pitfalls
- Storing tokens in logs: None of the tokens should be logged.
- Forgetting to expire tokens: None of the tokens should live beyond 15 minutes.
- Not invalidating old tokens: None of the tokens from previous requests should work.
- Allowing token brute-force: None of the endpoints should permit unlimited attempts.
We always address these. None of our projects have suffered from these issues. None of the clients have reported problems. None of the users have been locked out. None of the systems have been exploited.