Passkeys in Production: How We Ditched Passwords and Implemented Face ID in 3 Days

This Habr article details a practical guide to implementing Passkeys in a web application using FastAPI and Next.js. The author argues that traditional password requirements are outdated and create unnecessary friction, whereas biometric authentication like Face ID and Touch ID has become the standard for banking and major tech platforms. The article outlines the process of integrating passwordless login, which was achieved in just three days. By leveraging WebAuthn, the author demonstrates how to improve both security and user experience. The post includes full code examples, serving as a comprehensive tutorial for developers looking to move away from traditional password-based authentication systems in their own projects.