Hi! There's a great idea to improve the use of the iPhone. It would be great to implement a voice password along with face recognition. Currently, we wear protective masks and when using the phone it is not always convenient to remove the mask or enter a pin code, especially in the store and outdoors. What if the new version of the phone will recognised the voice of the owner. Such a function has already been introduced in banks. That would make the lives of users much easier. I hope for your decency and if you implement this function, you will not forget about the one who offered it)) my number 79022719336 Russia.
My Proposal for development
This has been considered many times. If you search the web with voice authentication, you will find a lot. So that may be a good idea but not new.