What is two-factor authentication?
Two-factor authentication (also known as 2FA or two-step verification) is a method to confirm a user’s claimed online identity by using a combination of two different types of factors. A password is typically considered one factor, and with 2FA that is combined with another factor to increase login security. Factors used for 2FA include:
The problem with passwords
Two-factor authentication has become the standard
Most service providers such as Google, Facebook and Apple already support 2FA and consider it an integral part of the authentication process.