How to Lock Mac Easily in 6 Ways: For All Mac Models
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7 ways to lock your MacBook - CNET
Shortcut Stickers for Chromebook, Apple Macbook, Windows, Word and more
macos - How do I lock the screen using a keyboard shortcut on OS X Mountain Lion with a Microsoft Natural Ergonomic Keyboard 4000? - Ask Different
How to lock your Mac screen with a keyboard shortcut | MacYourself