Two-factor authentication is better than one-factor authentication. That’s a given, just as having two different locks on the door is better than having only one – well, assuming they’re all of the same type.
There’s more than one type of two-factor authentication, too, and sorting through the options can be confusing. This article explains the differences between different types of 2FA, in a way that even your non-techie friends and relatives can understand.
https://nakedsecurity.sophos.com/2014/11/14/understanding-the-options-2fa/
