2 Factor Authentication – What is 2FA?
2 Factor Authentication – What is 2FA? – By dottotechyoutube.com Video
Google calls it 2 Step Verification.2FA is a simple to implement security setting that can and will protect most of your online accounts.
It is based on one rule, in order to access you account you need to know something (name and password) and have something (a trusted device like a smartphone to verify you are who you say you are). This combination secures your account to a much higher level.