Luckily, if you have an Apple Watch, the whole process can become much easier, less frustrating, but no less secure.
Unlocking Your Mac With Your Apple Watch
If you own a mid-2013 or later Mac, running MacOS 10.13 or above, you can set it up to automatically unlock whenever your Apple Watch is close by. Your Mac and Watch will both need to be connected to the same Apple ID and signed in to iCloud, but other than, once this is set up it really is automatic.
If you are not sure which year your Mac or MacBook is from, you can easily check. Click on the Apple Menu > About This Mac. Here you can see lots of information about your computer, including the year listed next to the model.
Step 1 – Turn On Auto Unlock
Make sure that your Mac is connected to Wi-Fi and has Bluetooth enabled. Your Apple Watch needs to be set up with a Passcode. Once these things are done, open the System Preferences on your Mac (Apple Menu > System Preferences).
Click Security & Privacy and then click General. Select “Use your Apple Watch to unlock apps and your Mac” or “Allow your Apple Watch to unlock your Mac.” The exact wording varies, depending on the version of macOS you are running.
If you have more than one Apple watch associated with the iCloud account, select the one you are using currently from the list of available devices.
You may need to enable two-factor authentication before you can enable this feature. You can do this in Apple Menu > System Preferences > Apple ID. From this section, choose Password & Security and then enable two-factor authentication and follow any further instructions to complete setup.
Go back and try to complete the Auto Unlock process now.
Step 2 – Unlocking Your Mac
This is the easy part! Simply wake your Mac and, as long as your Apple Watch is close enough, it will automatically unlock and be ready to use.
As soon as you move away from your Mac, the influence of the Watch will be lost, and it will lock according to the normal security settings.