Duo Multi-Factor Authentication

RSA SecurID Access

Thales

Symantec Whitepaper – Two-Factor Authentication

Duo – Two-Factor Authentication Evaluation Guide

Schneier on Security – More on Two-Factor Authentication

BrightTALK – Cybersecurity Roundtable: MFA Bypass and How to Defend Against It

SANS Whitepaper – Two-Factor Authentication: Can You Choose the Right One?

SANS Whitepaper – Biometrics and User Authentication

YouTube – Identification and Authentication – Information Security Lesson