Next time you log in, you’ll be asked to enter a five- or six-digit one-time passcode (OTP) that’s texted to your phone after you enter your username and password. When you enable 2FA by SMS, you need to provide a mobile phone number. Here are the five main types of 2FA and the pros and cons of each. Websites and apps offer different ways to secure your account with 2FA, and not all are equally secure. They’ll need a second factor to access your account. When you enable 2FA for an online account, if a criminal discovers just one of these factors, like your password, they’ll be out of luck. What time it is (time factor): the time you’re trying to log in or the time you’re taking to log in, based on the assumption that logging in takes a limited, predictable time.
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