Editing Apple Magic Keyboard (section)

==Touch ID==
Touch ID is a fingerprint reader in ''Magic Keyboard with Touch ID'' (with or without numpad) and integrated in the keyboard of MacBook laptops with Magic Keyboard.
It is used to unlock and log in into [[macOS]] or to switch users, and to purchase items using Apple Pay.

The host computer must be a Macintosh with an Apple CPU which includes a "Secure Enclave".
The keyboard's Touch ID sensor is paired to one computer at a time.
There is a limit of five Touch ID keyboards paired to one computer.
Each user can store up to three fingerprints, but there is a total limit of up to five fingerprints per computer.

TouchID in an external keyboard can not be used with an iPad or iPhone, even if it has an Apple processor.

Touch ID sensors are not available anywhere else but in Apple Magic Keyboards. People have had to resort to dismantle existing keyboards to get them out.