The wireless Magic Keyboard with Touch ID and the Magic Keyboard with Touch ID and Numeric Keypad (shown below) have built-in features that make it easy to enter emoji, switch keyboard languages, lock your Mac Studio, and perform many system functions with the touch of a key. You can also use a fingerprint to sign in and make purchases using Apple Pay.
To connect your Magic Keyboard with Touch ID to your Mac Studio, see Are you new to Mac?.