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Have you ever wondered if someone recently used your Mac and opened some of your files or apps? The easiest way to tell quickly is by looking at your Recent list, found in the  Apple menu. Then just look for apps, documents, or servers that you did not access recently. Found something you know you didn't open? Well, someone else did then!

Also shown in the video is how to clear the Recent Items menu, which you can do before leaving a Mac unattended. That way the only things that turn up in the list are files, apps, and whatever else you absolutely did not use recently, and may be helpful in determining if anyone used your Mac recently.

Remember, always set a password on your Mac, use the lock screen for added security and privacy, and consider using different user accounts if more than one individual uses a single Mac.

Here is how to set password protection on a Mac:

http://osxdaily.com/2011/01/21/password-protect-mac/

Here is how to set and use the lock screen, which requires a password to get past:

http://osxdaily.com/2011/01/17/lock-screen-mac/

And here is the accompanying article to this video showing how to tell if someone opened your files and documents:

http://osxdaily.com/2012/10/02/how-to-tell-if-someone-opened-files-mac/

Read more great tips about Macs, iPhones, iPads, OS X, iOS, and everything in between at http://osxdaily.com