This improves upon standard multi-factor authentication by eliminating the additional hardware, licensing and support usually required to provide a comparable level security.

Consider using some type of multi-factor authentication to add an extra layer of security such as Gmail's 2-step verification.

Presumably with multi-factor authentication, there must be other factors to hack as well, such as the username, and password.

Biometric authentication also satisfies the regulatory definition of true multi-factor authentication.

Strong authentication is often confused with two-factor authentication or more generally multi-factor authentication.

XMPP based multi-factor authentication.

The company provides on-demand encryption key management and multi-factor authentication both on and off the cloud, and specializes in elliptical curve cryptography.

Unless these are combined with one of the other two factors, i.e., "something the user has" or "something the user is," it does not constitute multi-factor authentication.

In addition, the use of shared-secrets (e.g.: passwords and PINs) or knowledge-based information can be employed in order to create a multi-factor authentication scenario.

Security tokens like smart cards or secure USB flash devices are seen by security experts as the best way to authenticate users, since many require multi-factor authentication.

A 2007 study sponsored by BearingPoint reported 94% of the authentication solutions implemented by U.S. financial institutions fail to meet the regulatory definition of true multi-factor authentication.

When using a multi-factor authentication password manager that automatically fills in logon fields, the user does not have to type any user names or passwords for the keylogger to pick up.

Soliciting multiple answers to challenge questions may be considered strong authentication but, unless the process also retrieves 'something you have' or 'something you are', it would not be considered multi-factor authentication.

Multi-factor authentication - Multi-factor authentication requires that the user uses a user id, password combined with any other form of authentication method as smartcard or biometric.

Two-factor authentication (or multi-factor authentication) is sometimes confused with "strong authentication", however, "strong authentication" and "multi-factor authentication" are fundamentally different processes.

In September 2009, an Illinois district court issued a ruling allowing a couple to sue Citizens Financial Bank alleging that the bank failed to sufficiently secure their account with adequate multi-factor authentication security.

While not all password managers can automatically handle the more complex login procedures imposed by many banking websites, many of the newer password managers handle complex passwords, multi-page fill-ins, and multi-factor authentication prior.

I think this is the entire point of G+, it is using your Gmail account/Google Profile... With the ability to do Multi-factor authentication along with being able to see what IPs have accessed your account I think you are in good shape.

Following the U.S. Federal Financial Institutions Examination Council's (FFIEC) publication advising the use of multi-factor authentication, numerous vendors began offering authentication solutions that are not compliant with the FFIEC's definition of "true multifactor authentication".