2. (8 pts) Suppose that Ubuntu changed its login screen and authentication mechanism such that instead of asking for and verifying the username and password, it uses a face recognition system. This modification also changes the data stored for the authentication. Describe the required modification in terms of the stored value and its implications for security i.e., what happens if the stored data for authentication is stolen. You are expected to compare the new system with the old authentication mechanism and describe at least one obvious disadvantage