How does Mac lock screen?

How does the Mac lock screen? The system's lock screen function can lock the screen when we leave the computer and enter the login interface to prevent others from tampering with the computer. For Mac users, how do we set the Mac lock screen function? Here is a small part of the new Mac users to introduce how to lock the screen under the Mac operation method.

1. Open the Keychain Access app on your MAC first, as shown in the figure

2. Next, click on the "Keychain Access-preferences" option in the menu bar, as shown in the figure

3. In the Keychain Preferences window, tick the "Show Keychain status in menu bar" option, as shown in the figure

4. Click the lock icon in the menu bar, then click the "Lock Screen" option to lock the screen.

5. Of course, if you are a MacBook Air or MacBook Pro laptop, just cover the notebook. A