With Auto Unlock, your Mac logs you in automatically when you're wearing your unlocked Apple Watch nearby — no password typing needed.

How to set it up

1. On your Mac, open System Settings (or System Preferences on older macOS)
2. Go to Touch ID & Password (or Security & Privacy on older macOS)
3. In the Apple Watch section, turn on the toggle for your Apple Watch

Requirements

• Your Mac and Apple Watch must be signed in to the same Apple Account with two-factor authentication enabled.
• Both devices need Wi-Fi and Bluetooth turned on.
• Your Apple Watch must have a passcode set.

Good to know

• The first time you turn on, restart, or log out of your Mac, you'll need to enter your password manually. After that, Apple Watch handles it.
• You can also double-click the side button on your Apple Watch to approve password prompts on your Mac — like installing apps or unlocking system settings.
• Auto Unlock requires watchOS 3 or later and macOS Sierra 10.12 or later. Password approval requires watchOS 6+ and macOS Catalina 10.15+.

For more details, see Apple's guide on unlocking your Mac with Apple Watch.