To set up your Linux system for U2F:

  1. If you have a YubiKey NEO or YubiKey NEO-n ensure you have unlocked the U2F mode by following the instructions at http://yubi.co/unlockU2F. If you have a Security Key by Yubico (blue color), U2F is enabled by default (only U2F mode is supported on this product).
  2. Go to https://github.com/Yubico/libu2f-host/blob/master/70-u2f.rules and
    download or create a copy of the file named 70-u2f.rules into the Linux directory:
    /etc/udev/rules.d/
    If this file is already there, ensure that the content looks like the one provided on github.com/Yubico (link above).
    Note: If your version of UDEV is lower than 188,
    use the rules at https://github.com/Yubico/libu2f-host/blob/master/70-old-u2f.rules instead.
  3. Save your file, and then reboot your system.
  4. Ensure that you are running Google Chrome version 38 or later. Starting with Chrome version 39, you will be able to use the YubiKey NEO or YubiKey NEO-n in U2F+HID mode.
in Frequently Asked QuestionsUniversal 2nd Factor (U2F)