Authentication is the process of verifying the identity of a person or device. It is a security measure that is used to confirm that a user or device is who or what it claims to be. Authentication typically involves verifying the person's or device's credentials, such as a username and password, a security token, or a biometric scan.
There are different types of authentication methods, including:
The level of authentication needed depends on the sensitivity of the information being accessed and the potential impact of unauthorized access.