You can protect your model by specifying a password that must be entered to open the model. Models with password protection are marked by a padlock in the Recently used models area of Home. If you try to open a password-protected model, the Enter password dialog is displayed for you to enter the relevant password.
Use password
Specifies that a password is required for opening the model.
Password
Records the password that is required for opening the model.
Passwords may contain letters (a...z, A...Z), numbers (0...9), or one of the following characters: _ ? # . -
Confirm password
Retyping the password prevents you from entering the password with a typing error and thus not being able to reproduce it later on.
If the password confirmation does not match the password you entered before, password protection will not be enabled for the model.