touch-id

I've integrated LocalAuthentication for my app security purpose, which has been supporting 'Touch Id' based supporting. But now, apple has recently added 'Face Id' based authentication also. How can I check, which type of authentication is supported by a device. Touch Id or Face Id? With Xcode 9, Look at LocalAuthentication -> LAContext -> LABiometryType . LABiometryType is a enum with values as in attached image You can check which authentication type supported by device between Touch ID and FaceID or none. Edit: Apple have updated values for this enum LABiometryType . none is deprecated now

I know that with LocalAuthentication , it is easy to embed TouchID in an iOS app. But is it possible to get the TouchID information and compare it to other fingerprint databases? From Apple doc Touch ID doesn't store any images of your fingerprint. It stores only a mathematical representation of your fingerprint. It isn't possible for someone to reverse engineer your actual fingerprint image from this mathematical representation. The chip in your device also includes an advanced security architecture called the Secure Enclave which was developed to protect passcode and fingerprint data.

I have an iPhone App in the app store which is using Touch ID. If Touch ID is enabled, the user is authenticated with it, else user needs to enter his PIN to login to the application. After IOS 10.1 release, when I checked the crash report, the crash count has increased. From the crash report, it is pointing on [UIApplication _cachedSystemAnimationFenceCreatingIfNecessary:] and when I opened the app in Xcode, it is focussing on [self dismissViewControllerAnimated:YES completion:nil]; . The code I have written is as below: -(void) showTouchIDAuthentication{ LAContext *myContext = [[LAContext