Passwords security has always been a concern. That is why passwords need to be complex, frequently changed, and not reused. However, today, the environment is such that strong passwords are just not enough. Passwords can be stolen, broken or misused, and are not the most secure way to protect your data and accounts.
Two-factor authentication is a simple feature that asks for more than just your password. It requires both "something you know" (like a password) and "something you have" (like your phone or something that you only know). For example, using your phone or pager – any phone that can receive texts – you sign in with your password and a secret code sent via a text message. Only you have the code, and you only use this code once.