Once you’ve set up more than one account, the dialog box shown in Figure 15-1 appears whenever you turn on the Mac, whenever you choose →Log Out, or whenever the Mac logs you out automatically. But a few extra controls let you, an administrator, set up either more or less security at the login screen—or, put another way, build in less or more convenience.
Open System Preferences, click Users & Groups, click the and enter an admin password to prove your worthiness, and then click the Login Options button (Figure 15-10). Here are some of the ways you can shape the login experience for greater security (or greater convenience):
Automatic login. This option eliminates the need to sign in at all. It’s a timesaving, hassle-free arrangement if only one person uses the Mac, or uses it most of the time.
When you choose an account holder’s name from this pop-up menu, you’re prompted for his password. Type it and click OK.
From now on, the dialog box shown in Figure 15-1 won’t appear at all at startup time. After turning on the machine, you, the specified account holder, zoom straight to your desktop.
Of course, everybody else must still enter their names and passwords. (And how can they, since the Mac rushes right into the Automatic person’s account at startup time? Answer: ...