Authentication
Authentication is the process of verifying the identity of a user, usually through the use of a username and password. It is the first step in accessing an HMI and ensures that only authorized users are allowed to access it.
Authorization
Authorization is the process of granting or denying access to a resource based on the identity of the user and the roles assigned to them. It is the second step in accessing a resource and ensures that only authorized users with the correct permissions are allowed to access it.