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?
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?
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.