Check device support biometric type in iOS

biometrictype.swift

//Noted: This code is written in Swift 5.1
//By: Sour Leangchhean

import LocalAuthentication

//Mark: BiometricType for define type
enum BiometricType{
    case touchID
    case faceID
    case none
}

func getBiometricThisDevice() -> BiometricType{
    
    let authContext = LAContext()
    let _ = authContext.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: nil)
    switch (authContext.biometryType){
    case .faceID:
        return .faceID
    case .touchID:
        return .touchID
    default:
        return .none
    }
}

// Mark: How to use it in SwiftUI
struct ContentView: View {
    var body: some View {
        Text("This device support \(getBiometricThisDevice() == .faceID ? "FaceID" : "Touch ID")")
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}