Can Touch ID be used to allow many people to use t

问题:

I have a requirement where the same iPhone is shared among a small set of people.

Is there an iOS API that allows me to determine who unlocked the phone, so that I can create a user-specific display of my application?

回答1:

Nope, can't be done. All you know is that the Touch ID succeeded or not.

Keep in mind that an iOS device with Touch ID has no concept of a user. You can simply register several different finger prints. None are tied to a specific person.