fixed: BiometryNotEnrolled showing wrong message for FaceID device.

BiometricAuthentication.podspec

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
 s.name         = "BiometricAuthentication"
-s.version      = "3.1.1"
+s.version      = "3.1.2"
 
 s.summary      = "Use Apple FaceID or TouchID authentication in your app using BiometricAuthentication."
 

BiometricAuthentication/BiometricAuthentication.xcodeproj/project.pbxproj

@@ -298,6 +298,7 @@
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				MARKETING_VERSION = 3.1.2;
 				PRODUCT_BUNDLE_IDENTIFIER = com.rushi.BiometricAuthentication;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -321,6 +322,7 @@
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				MARKETING_VERSION = 3.1.2;
 				PRODUCT_BUNDLE_IDENTIFIER = com.rushi.BiometricAuthentication;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				PROVISIONING_PROFILE_SPECIFIER = "";

BiometricAuthentication/BiometricAuthentication/Authentication/AuthenticationErrors.swift

@@ -57,21 +57,21 @@ public enum AuthenticationError: Error {
 
     // get error message based on type
     public func message() -> String {
-        let authentication = BioMetricAuthenticator.shared
+        let isFaceIdDevice = BioMetricAuthenticator.shared.isFaceIdDevice()
 
         switch self {
         case .canceledByUser, .fallback, .canceledBySystem:
             return ""
         case .passcodeNotSet:
-            return authentication.faceIDAvailable() ? kSetPasscodeToUseFaceID : kSetPasscodeToUseTouchID
+            return isFaceIdDevice ? kSetPasscodeToUseFaceID : kSetPasscodeToUseTouchID
         case .biometryNotAvailable:
             return kBiometryNotAvailableReason
         case .biometryNotEnrolled:
-            return authentication.faceIDAvailable() ? kNoFaceIdentityEnrolled : kNoFingerprintEnrolled
+            return isFaceIdDevice ? kNoFaceIdentityEnrolled : kNoFingerprintEnrolled
         case .biometryLockedout:
-            return authentication.faceIDAvailable() ? kFaceIdPasscodeAuthenticationReason : kTouchIdPasscodeAuthenticationReason
+            return isFaceIdDevice ? kFaceIdPasscodeAuthenticationReason : kTouchIdPasscodeAuthenticationReason
         default:
-            return authentication.faceIDAvailable() ? kDefaultFaceIDAuthenticationFailedReason : kDefaultTouchIDAuthenticationFailedReason
+            return isFaceIdDevice ? kDefaultFaceIDAuthenticationFailedReason : kDefaultTouchIDAuthenticationFailedReason
         }
     }
 }

BiometricAuthentication/BiometricAuthentication/Authentication/BioMetricAuthenticator.swift

@@ -112,16 +112,19 @@ public extension BioMetricAuthenticator {
         }
     }
 
-    /// checks if device supports face id authentication
+    /// checks if device supports face id and authentication can be done
     func faceIDAvailable() -> Bool {
+        let context = LAContext()
+        var error: NSError?
+
+        let canEvaluate = context.canEvaluatePolicy(LAPolicy.deviceOwnerAuthenticationWithBiometrics, error: &error)
         if #available(iOS 11.0, *) {
-            let context = LAContext()
-            return (context.canEvaluatePolicy(LAPolicy.deviceOwnerAuthenticationWithBiometrics, error: nil) && context.biometryType == .faceID)
+            return canEvaluate && context.biometryType == .faceID
         }
-        return false
+        return canEvaluate
     }
 
-    /// checks if device supports touch id authentication
+    /// checks if device supports touch id and authentication can be done
     func touchIDAvailable() -> Bool {
         let context = LAContext()
         var error: NSError?
@@ -132,6 +135,18 @@ public extension BioMetricAuthenticator {
         }
         return canEvaluate
     }
+
+    /// checks if device has faceId
+    /// this is added to identify if device has faceId or touchId
+    /// note: this will not check if devices can perform biometric authentication
+    func isFaceIdDevice() -> Bool {
+        let context = LAContext()
+        _ = context.canEvaluatePolicy(LAPolicy.deviceOwnerAuthenticationWithBiometrics, error: nil)
+        if #available(iOS 11.0, *) {
+            return context.biometryType == .faceID
+        }
+        return false
+    }
 }
 
 // MARK:- Private

BiometricAuthentication/BiometricAuthentication/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>3.0</string>
+	<string>$(MARKETING_VERSION)</string>
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 	<key>NSPrincipalClass</key>