The devices in Apple’s ecosystem always work really well together, and macOS Sierra doesn’t buck that trend. In fact, the upcoming desktop operating system lets Apple Watch owners automatically unlock their Macs using the wearable device — no lengthy password needed.
It’s a small, but incredibly useful, new feature that rewards Mac owners who have taken the dive and invested in an Apple Watch. Here’s how to use it when running macOS Sierra, which is currently in public beta and will be released this fall.