A practical guide to passwordless authentication patterns for developers in 2026, covering magic links, email OTP, SMS/WhatsApp OTP, and passkeys (FIDO2/WebAuthn). Explains the security model behind each approach, when to use each, and includes Node.js code examples using the MojoAuth API for magic link and OTP flows. Also covers migration strategy for existing password-based user bases and how to layer social login alongside passwordless methods.
Table of contents
Why Passwords Are Still a Developer's Problem in 2026The Four Passwordless Patterns Worth UnderstandingWhy You Should Use a Platform Instead of Building This YourselfImplementation Walkthrough: Magic Link Authentication in Node.jsSwitching to Email OTP: What ChangesAdding Social Login Alongside PasswordlessThe Migration Question: Existing Users With PasswordsFrequently Asked QuestionsWhere to Go From HereSort: