The Mac lock screen message is a very useful function. You can set a custom message to display it on the Mac lock screen. You can put any message you find useful or interesting, such as if you put personal contact information , It is very useful when you misplace your Mac or lose your Mac. It allows people to know who the Mac belongs as soon as they turn on the Mac. Let's take a look at how to set this message!
You will need an administrator account to create a lock screen message on your Mac. Here is the specific tutorial.
Click the "" icon in the menu bar. Choose System Preferences.
Choose security and privacy.
Select the "General" tab. Click the lock icon at the bottom of the window and
enter your administrator name and password to unlock.
Select "Set lock message..." to
enter the message you want, click OK,
click the lock icon in the lower left corner to make changes. The
setting is successful, and your message will appear at the bottom of the lock screen interface, as shown in the figure
