Passwordless authentication: magic links, WebAuthn, and MFA options
This presentation explains passwordless login approaches for HTX: how magic links, WebAuthn (passkeys/hardware keys), and multi-factor authentication combine to provide secure, user-friendly access without requiring a traditional password.
Why passwordless?
Eliminates weak or reused passwords and the risk of credential stuffing.
Improves user experience with faster access flows (magic links, passkeys).
When combined with MFA and device attestation, it offers strong protection against remote compromise.
Common passwordless methods
Magic links
Send a one-time link to the user's email that signs them in when clicked. Short-lived and single-use.
WebAuthn / Passkeys
Use platform biometrics or security keys (FIDO2) for cryptographic authentication without passwords.
OTP & Push MFA
Combine passwordless with time-based OTP or push-based confirmations for added assurance.
Demo: Passwordless login (magic link)
The form below demonstrates a magic-link initiation. This is a client-side mock — a real implementation requires a backend to generate short-lived tokens and secure email delivery.
Demo note: Do not use demo forms to collect real user data. Implement server-side token creation, rate limiting, and proper email-sending safeguards in production.
Security considerations
Magic links must be single-use, short-lived (minutes), and bound to the user's device/session where possible.
Protect against account takeovers by combining passwordless with device binding or additional MFA on high-risk actions (withdrawals, trades).
WebAuthn provides phishing-resistant cryptographic authentication when supported by the user's device.
UX best practices
Provide clear messaging about link expiry and alternative sign-in options.
Offer fallback methods (email OTP, support flows) for users without passkey-capable devices.
Make recovery and account linking flows explicit and secure—avoid weak account recovery paths.
Closing
Passwordless authentication can significantly improve security and user experience for HTX when implemented correctly. Combine cryptographic authentication (WebAuthn) with short-lived magic links and layered MFA for the best balance of security and convenience.
Disclaimer: This presentation is informational only and does not provide production-ready code. Magic links and passwordless flows require secure backend implementation, proper tokenization, rate limiting, and secure email delivery. Do not rely on client-side demos for real authentication. This content is not financial or legal advice.