What’s New in watchOS 3.0: Get the Best Apple Watch 2 Features Today

Unlock Your Mac

When you use macOS Sierra on your MacBook you can now unlock it with your Apple Watch. When you are near your Apple computer the two devices talk to each other so that your Mac is ready as soon as it wakes up.

You'll need macOS Sierra, an iPhone and an Apple Watch on watchOS 3.0 for this to work. The two devices will connect when you are close and then the computer will unlock.