Switch Between Accounts In a Flash
If you share your computer with your family or loved ones, you might want to consider having specific accounts for each user. The cool thing, though, is that you can instantly switch between accounts with your Touch ID.
So if someone has their own account on your Mac, you can put your finger on the Touch ID button for a second and then press it. Your Mac will automatically switch to your own profile in a matter of seconds.
Before using this feature, make sure it’s available by going to your System Preferences and then Touch ID. Then, tick the checkbox next to Use Touch ID sensor for fast user switching. Also, make sure each person uses a different account and has their own fingerprint added to your Mac.