Authentication is a method to verify the credentials of users that request access to a system, network, or device. The different types of authentication are :
Single-factor authentication : it is the simplest and most common way of authentication. This method requires only one verification method, such as a password or a security pin, to grant access to a system.
Two-factor authentication (2FA) : it requires a second factor to verify a user’s identity. In this method, you will have to enter the username, password, and OTP or PIN for verification.
Multi-factor authentication (MFA) : it needs two or more independent ways to identify a user, such as codes generated from the user’s smartphone, Captcha tests, fingerprints, or facial recognition.
Bio-metric authentication (BFA) : it requires the username, password, and biometric verification, such as voice identification, fingerprint, eye, or face scan.
