You may know that your Mac can send you notifications via the native Notifications Center, introduced in OS X Mountain Lion. You can get notified via a pop up badge or alert window for various activities, like iMessages, Calendar events, FaceTime calls, or Game Center achievements, just to name a few.
In Mavericks, you can even get these messages when your screen is locked with a password via the Privacy system preferences option. Your notification alerts will show up on top of your lock screen.
But what if you want to preserver your privacy when you lock your Mac’s screen but you don’t want to enable Do Not Disturb mode?
Launch your System Preferences app from the Dock or the Apple menu, and click on the Notifications icon. Once there, you’ll see a list of notifying apps down the left column. Click on any of them to change the options. Find an app you’d like to not show up in the lock screen via Notification Center, and click on it in the left column.
Looking to the right pane, then, you’ll see an option to Show Notifications on lock screen. Uncheck this box. Now, that app will no longer send its Notifications to the lock screen, so you can filter out private iMessages or Calendar events, while still letting FaceTime or Skype calls through, for example.
It would be nice if there was a global checkbox to keep all Notifications off your MAc’s lock screen, though. Perhaps in an update?
Via: Pocket Lint