What Is Two-Factor Authentication (2FA)?
Two-Factor Authentication (2FA) is an authentication method that requires two different forms of identification to verify a user’s identity. It adds an extra layer of security by requiring users to provide something they know, such as a password or PIN, and something they have, like a physical token or their mobile phone. This makes it much harder for hackers to gain access to accounts since the second factor provides another barrier between them and the account. 2FA can be used in many different scenarios including online banking, email services, social media sites and more.
The most common form of 2FA is using SMS messages sent directly to your mobile device with a one-time code that must be entered into the website before you are allowed access. Other methods include biometric authentication such as fingerprint scanning or facial recognition technology which require physical contact with the device being used for verification purposes. Additionally there are hardware tokens available which generate random codes each time they are pressed; these codes must then be entered into the website along with your username/password combination in order for you to gain access.