Craig Federighi explains why the Face ID record only a single face
Craig Federighi, head of software engineering at Apple, confirms that the Face ID is designed for the authentication of a single user and no changes are foreseen on this point.
In an e-mail response to the request of a user, Federighi explains that the Touch ID was thought to be for use by a single user. The possibility of being able to store up to five fingerprints was not due to the fact that Apple thought to use multi-user (for example a married couple), but simply to allow the owner of the device to store multiple fingers of his hands (for example, thumb and index finger of the right hand and left hand).
Federighi he added that the Face ID may authenticate many faces, as the system evolves in the future, but for the moment, Apple is not going to implement this possibility.
In conclusion, both the Touch ID and the Face ID are designed to be used by a single user, and for this Apple has not for the moment going to increase the options for face recognition.
Link to the original article: Craig Federighi explains why the Face ID record only a single face