It’s a great way to boost your security, and here’s how it works. These keys work in tandem with two-factor authentication (2FA), so you still need your password.

This will make the original row of function keys appear on the Touch Bar, including the Escape key if your Mac doesn't have a physical one.

The tap-to-unlock function is the same as Apple’s current Home Key feature — just walk up to your door and hold your watch or phone up, and the door unlocks.