• What is FIDO U2F?

    U2F is an open authentication standard that enables internet users to securely access any number of online services with one single security key instantly and with no drivers or client software needed.  
    Get a U2F compatible security key now

    Where did U2F come from?

    FIDO U2F was created by Google and Yubico, and support from NXP, with the vision to take strong public key crypto to the mass market. Today, the technical specifications are hosted by the open-authentication industry consortium known as the FIDO Alliance. U2F has been successfully deployed by large scale services, including Facebook, Gmail, Dropbox, GitHub, and many more. The next evolution of the FIDO U2F modern authentication protocol is FIDO2 which introduces passwordless authentication capabilities.

    Click here for a list of featured services that use FIDO U2F.

    Check out FIDO2 for the latest generation of the U2F protocol.

    How it works – 3 options, 2 simple steps to authentication

    Origin binding: defense against phishing

    With the U2F-enabled Security Key, such as the YubiKey, user login is bound to the origin, meaning that only the real site can authenticate with the key. The authentication will fail on the fake site even if the user was fooled into thinking it was real. This greatly mitigates against the increasing volume and sophistication of phishing attacks and stops account takeovers.

    What are the advantages to U2F?

    Fast Authentication

    Decrease time to authenticate by > 4x

    High Privacy

    Reduce support desk costs by > 90%

    Strong Security

    No account takeovers when deployed fully

    Trusted Production

    Made in Sweden and USA; secrets controlled by customers

    Multiple Choices

    Access to nearly 1,000 apps and services with no shared secrets

    Cost Efficient

    Water and crush-resistant; no network connection or batteries


    To learn more about U2F for developers, visit the Yubico Developer Program.

    Peace of mind and flexibility

    for less than a cup of coffee per user/month

    Get Started

    YubiKey 5 series
    Find the right YubiKey

    Take the quick Product Finder Quiz to find the right key for you or your business.

    YubiKey in grass

    Get protected today

    Browse our online store today and buy the right YubiKey for you.