fallback for ios 8

README.md

@@ -199,5 +199,6 @@ console.log("App is running in emulator", DeviceInfo.isEmulator()); // if app is
 
 console.log("App is running on a tablet", DeviceInfo.isTablet()); // if app is running on a tablet return true
 
-console.log("PIN or fingerprint configured on device", DeviceInfo.isPinOrFingerprintSet()); // if PIN or fingerprint is configured
+console.log("PIN or fingerprint configured on device", DeviceInfo.isPinOrFingerprintSet()); // if PIN or fingerprint is configured.  
+// For iOS 8.0 and below, this will only return true if Touch ID is enabled
 ```

RNDeviceInfo/RNDeviceInfo.m

@@ -166,7 +166,14 @@ RCT_EXPORT_MODULE()
 - (bool) isPinOrFingerprintSet
 {
   LAContext *context = [[LAContext alloc] init];
-  return ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:nil]);
+
+  // Fallback to LAPolicyDeviceOwnerAuthenticationWithBiometrics if iOS version <9.0
+  if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion){9,0,0}]) {
+    return ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthentication error:nil]);
+  }
+  else {
+    return ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:nil]);
+  }
 }
 
 - (NSDictionary *)constantsToExport