Two-Factor authentication for Windows/Mac?

I really, really like two-factor authentication and want to use it on everything I possibly can. Can anyone recommend a relatively light-weight system to implement two-factor authentication for logging into my actual PC proper, or my Mac laptop?

Would implementing this actually help protect my files from being compromised, or would that only feasibly protect me from nefarious Remote Access? If I'm just hoping to make sure my files are secure, is a good firewall and strong cybersecurity program (I already use BitDefender) my best bet?

Please and thank you.

Submitted February 28, 2018 at 11:55PM by king_jasper http://ift.tt/2owwzZC