Mac OS X 10.5 Help
Requiring users to log in to the computer
If you have more than one user account on your computer or if you want to keep your own information secure, you should require that users log in to their account using a password.
If a login window doesn’t appear when the computer starts up, automatic login is enabled and users are not required to log in.
To require all users to log in to the computer:
If settings are dimmed, click the lock icon and type an administrator name and password.
Click Login Options.
Choose Disabled from the “Automatically log in as” pop-up menu.
Select the login window options:
To have users select an account from a list in the login window, select the “List of users” checkbox.
To require users to type their user account name and password, select the “Name and password” checkbox.
To display an account’s password hints, select the “show password hints” checkbox.