Two factor authentication options
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.