Universal Second Factor


Universal Second Factor (U2F) protocol is a FIDO protocol is an open authentication standard that strengthens and simplifies Multi-Factor Authentication using specialized USB or NFC devices based on similar security technology found in Smart Cards.

Universal Second Factor initially developed by Google and Yubico, with contribution from NXP Semiconductors, the standard is now hosted by the FIDO Alliance.

Universal Second Factor allows online services to augment the security of their existing password infrastructure by requiring a Hard token using a FIDO Authenticator.

The authenticator provides an additional Authentication Factor to augment user login.

Universal Second Factor Authentication process#

In a U2F deployment the Authentication process is similar to

Universal Second Factor Challenges#

There are some Universal Second Factor Challenges that need to be considered.

More Information#

There might be more information for this subject on one of the following: