How to lock the screen with one key password under OS X system

This tutorial is ideal for users who use Macs in places such as companies or schools, and do not need to install any Third-party software. If you want to return to activation after locking the screen, enter a password, or else you can do nothing. Screenshots are also not possible.

First get into the Mac OS X system with the "keychain" Application (finder-application-utility-keychain access, or click the Magnifier button in the upper right corner of the Mac screen Spotlight search).

Click on the Mac top menu bar "Keychain Access" and select "preferences"

Tick "Show status in menu bar"

Mac top menu bar will be more than a lock button, leaving the Apple Computer to lock the screen, click to select.

When the screen is locked, the Apple Computer monitor renders the screen closed, but the system and software are not affected. Click on the mouse or keyboard will appear at the beginning of this article landing interface, to enter the password entry.

If you have not set (or want to modify) Apple login password: Click on the Mac screen in the upper left corner of the Apple logo, select "System Preferences", click "Account".

Here you can set or modify the Mac OS x system login password for Apple Computer