Data security has become one of the biggest concerns in the modern business world as they have become so dependent on computer data storage systems. Nothing has become as important as being able to secure their network and the 2 FA or 2 Factor Authentication system is becoming one of the most popular methods of securing data storage systems to ensure that only those who can meet all the necessary requirements can access the restricted areas.
What you will find is that both the PKI and OTP versions of the 2 FA protocol use a second factor in the overall authorization process. This system as issued by Digi-Sign combines something you know like a password or perhaps a PIN with something you have like an RSA token or perhaps in the latest versions, something you are. This can include the use of a biometric fingerprint scanner or retina scanner. These are all considered to be very strong authentication systems.