The three main authentication factors were discussed previously: What You Know, What You Have, What You Are, plus the FaceGuard innovation of Who You KnowAuthentication Factors

However, there is more to authentication which is also important. A single – 1FA – authentication factor, regardless of the specific approach, is still only one factor. Whether a password by itself, or a lone metal key, or even a high tech iris scan — stand alone, is inherently weak. By combining authentication factors, even two of the same, security increases exponentially.

Entering a code as well as submitting a fingerprint provides two factor authentication – 2FA – (Know and Have) for a vastly more impregnable access barrier. There is a variation on this approach wherein a password is keyed-in and then a confirmation code sent for additional key-in authentication. Both are predicated on What You Know but validation is achieved by the site requiring a real time challenge response. Such a scheme is in fashion although it can be cumbersome; especially driving and juggling a smartphone.

Consider the device ID, then add in a strong password, as well as a “Who You Know”: that is known as multi-factor authenticationMFA – because it utilizes “What You Have” (your specific smartphone, tablet, desktop or laptop PC) , plus “What You Know” (the password) as well as “Who You Know” (the face or faces of friend or family members). For the user/owner of FaceGuard, it’s all authentication is accomplished by correctly satisfying the FaceChallenge.

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Bonus:  it’s possible for FaceGuard to detect an incoming confirmation code and send the authentication signal automatically. “Look Ma, no hands!”.

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