Unlock with Apple Watch is the next best thing to Face ID for your Mac.

Your Apple Watch can do more than track your fitness activities and sleep habits, assuming you know how to sync it with your Mac. Here's how.

Step 1: Set up Two-Factor Authentication on your Mac Before you can use your Apple Watch to unlock your Mac you’ll need to set up Two-Factor Authentication on your Mac or your iOS device.

Setting up Auto Unlock Both your Mac and Apple Watch must support Auto Unlock to add the feature. With watchOS 3 or later installed, Auto Unlock works with all Apple Watch models.

Given that enabling an Apple Watch passcode is one of the requirements of Unlock With Apple Watch, it's worth turning this setting on and off again to see if it triggers something.

Now, whenever your Apple Watch is within a few feet -- or about 1 meter -- of your Mac, the Mac will automatically unlock, rather than waiting for you to type in your password.

Instead of tapping out your PIN code on the way-too-small number pad, here's how you can use your iPhone to unlock your watch.

It's intended for when Face ID can't see your whole face. If you're interested in that idea and want to know how to set the feature up, keep reading! How to unlock your iPhone with Apple Watch ...