Then you confirm your identity, usually by entering a token or code sent to your mobile device or email address.ĢFA adds security to your online life because, to access your logins, you need a password that only you know and a mobile device that only you have. This process is called "single-factor authentication" because you prove your identity in one step by providing something that only you know.Ģ-factor authentication (2FA) requires two steps. When you log in to a website or app, you use your password to prove that you are who you say you are.
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