What is two-factor authentication?
Today, the most common way to access your online accounts is by entering your username and password. This is known as single factor authentication because the user simply needs to prove who they are with a password—their single factor. 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. These can 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.