Before you start setting up either device, you’ll need to enable two-factor authentication on your Apple ID. It’s important to note that Apple also has another security measured name two-step authentication. But that won’t allow the Apple Watch to unlock a Mac.
Two-factor authentication is a great way to protect your valuable Apple ID and anything stored on the account. With the feature enabled, it ensures that only you can access the account – even if someone else is able to gain your password.
When signing into a new Apple device for the first time, you’ll provide two pieces of information – the account password along with a special six-digit verification code that is displayed on other trusted devices. For example, when setting up a new iPhone X you’ll need to provide the Apple ID password and code displayed on another Apple device you own.
You can turn on the security measure on any iOS device by going to Settings, iCloud, and then selecting the Apple ID. Select Password & Security and then choose Turn on Two-Factor Authentication. Follow the steps on the screen to finish the process.
The entire process takes a few minutes, but it’s definitely worth it and something every Apple user should enable.