Apple has updated the platform security guide with instructions such as biometrics, and the new Magic Keyboard with Touch ID is compatible with M1 Mac in general, and "Unlock Face ID compatible iPhone with Apple Watch while masking" Clarified the criteria for doing.
The updated guide first states that the Touch ID sensor built into the recent MacBook Pro and MacBook Air (with the M1 chip) is compatible with the Touch ID on the Magic Keyboard side. This was previously reported as unconfirmed information, but this time Apple has publicly reconfirmed it.
In other words, the fingerprint registered with the Touch ID built into the Mac can be verified with the Touch ID on the Magic Keyboard side, and vice versa. In other words, the fingerprint matched by either can be processed normally by the secure enclave (security coprocessor that handles biometric information of Face ID and Touch ID) built into the M1 chip.
So far, the Magic Keyboard with built-in Touch ID is only sold as a set with a 24-inch iMac, but this compatibility means that it's okay to sell it separately.
Apple has made it possible to purchase accessories that were originally exclusive to the iMac later as a single item. For example, when the iMac Pro went on sale at the end of 2017, the Space Gray version of the Magic Keyboard, Magic Mouse, and Magic Trackpad was only sold as a set, but in March 2018, it was sold separately. It seems that there is a strong demand from Mac mini users who have M1 but do not have Touch ID built-in.
It has also been revealed that the Magic Keyboard with Touch ID can be safely paired with only one Mac, while one Mac can safely pair up to five keyboards. Eventually, it may be aimed at having multiple Mac users buy their own keyboards one by one.
To register a new fingerprint, you need to "physically confirm" your intention to use the Magic Keyboard with Touch ID on your Mac. This can be done by successfully matching the fingerprints previously registered on the Mac, or by pressing the power button twice (possible without matching the fingerprints).
Furthermore, in order to "unlock Face ID compatible iPhone with Apple Watch while masking" (iOS 14.5 and watchOS 7.4 or later are required), the following conditions must be met.
If you are having trouble unlocking while wearing a mask, check these items.
Source: Apple Platform Security
via: MacRumors