Unlock Your Apple Devices Without Even Trying
Your Apple Watch can also help you control your other Apple devices to some extent.
For instance, if you have a Mac with the same Apple Account as your Apple Watch, then you can change a few settings so your Apple Watch always unlocks your Mac whenever you’re nearby. Likewise, you can also make it so your Apple Watch unlocks your iPhone when you are wearing it.
To unlock your Mac with your Apple Watch, go to the Apple menu > System Settings > Touch ID & Password, scroll down, and enable your Apple Watch under Apple Watch.
On iPhone, simply go to Settings > Face ID & Passcode. Enter your passcode, scroll down, and under Unlock with Apple Watch, enable your Apple Watch’s name.