MacOS - A keyboard shortcut to rapidly lock your screen

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This feature is native to MacOS, but you need to activate it first.

Enable password protection for the screen saver:
  • From the Apple menu > System Preferences > Security and Privacy.
  • In the "General" tab: check the "Require password" and "immediately".
  • As from now the keyboard short-cut to launch the screen saver (CTRL-SHIFT-EJECT) will lock the Mac: you will need to enter your user password to unlock it.
Jean-François Pillou

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