FIDO U2F Security Keys Software Development Kit for FIDO Authentication

FIDO U2F Authentication SDK and Management System.

Protect access to your website or web application by enabling login using FIDO U2F Security Keys and contactless NFC FIDO tokens for mobile authentication. Protect logins against hackers, malware and keyloggers by deploying secure two-factor authentication.

You can provide your users with a simple and secure mechanism for logging in to your website or web application using FIDO tokens which are also supported by Google, Dropbox and Github to name a few. In addition, SmartSign supports FIDO authentication on every browser on Windows, Mac and Linux.

SmartSign includes an authentication server, SDK, management system and comprehensive documentation.

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Other Authentication Methods

Smartphone mobile soft-token 2-factor authentication


Smartphone and tablet based two-factor authentication. Simple, convenient and secure.

One time password OATH OTP HOTP TOTP hardware token support


SmartSign supports OATH One Time Password (OTP) hardware tokens, both event-based and time-based.

Email-based One Time Password (OTP) 2-factor authentication

Email-Based OTP

Instantly deploy strong authentication using email OTP delivery. Tokenless authentication on the move.

FIDO two-factor authentication 2FA SDK

FIDO U2F Tokens

Simple and convenient two-factor authentication using FIDO U2F tokens (USB or contactless).