The tech titan also patched up some lingering problems from the older version, but since this is still a beta release, you might still encounter a few bugs and errors along the way. Just don't forget to install updates when they come out and to report any issues through the beta software's built-in Feedback Assistant app to improve your experience. Finally, if you have access to the developer beta of watchOS 3, you can now unlock your computer with an Apple Watch. In case this is your first time previewing a pre-release version of Mac's desktop platform, you may want to install it on a second Mac (if you have more than one) and to make a backup of your computer, just to be safe.