I believe you are confused because Apple previously offered "Two-Step Verification", and this is "Two-Factor Authentication". I myself am finding it difficult

I believe you are confused because Apple previously offered "Two-Step Verification", and this is "Two-Factor Authentication". I myself am finding it difficult to find a clearly written explanation of the difference. EDIT: What I have discovered: It's now a 6 digit code (previously 4); and gives you more location based information with a map showing where the login is occurring from. You can also now "reject" the request, which will then open a prompt to ask if you'd like to change your password. Another new "feature" is that in order to support older devices that do not have Two-Factor Authentication built in, you can generate a verification code from a trusted device, and append that code to the end of your password.