diff --git a/example/src/App.tsx b/example/src/App.tsx
index 5fc7280..c72b91c 100644
--- a/example/src/App.tsx
+++ b/example/src/App.tsx
@@ -3,7 +3,7 @@ import { StyleSheet, View, Text, Button } from 'react-native';
 import { GameCenterAuth, PlayGamesAuth } from 'react-native-game-auth';
 
 export default function App() {
-  const [result, setResult] = React.useState<Boolean | undefined>();
+  const [result, setResult] = React.useState<Boolean | undefined>(undefined);
   const [json, setJson] = React.useState<string | undefined>();
 
   const psAuthStateChanged = (isSignedIn: boolean): void => {
@@ -23,7 +23,7 @@ export default function App() {
       const x = GameCenterAuth.onAuthenticate((i) => {
         setResult(i);
       });
-      GameCenterAuth.initAuth();
+      GameCenterAuth.initAuth(false);
       return () => {
         x.remove();
       };
@@ -34,16 +34,18 @@ export default function App() {
 
   return (
     <View style={styles.container}>
-      <Text>{result ? 'Authenticated' : 'Not authenticated'}</Text>
+      <Text>{result ? 'Authenticated' : 'Not authenticated ' + result}</Text>
       <Button
         title="getPlayer"
         onPress={() => {
           GameCenterAuth?.isAuthenticated().then((x) =>
             console.log('isAuthen', x)
           );
-          GameCenterAuth?.getPlayer()
-            .then((x) => setJson(JSON.stringify(x)))
-            .catch((x) => console.warn(x));
+          GameCenterAuth?.initAuth(true);
+          GameCenterAuth?.isAuthenticated();
+          // GameCenterAuth?.getPlayer()
+          //   .then((x) => setJson(JSON.stringify(x)))
+          //   .catch((x) => console.warn(x));
         }}
       />
       <Button
diff --git a/ios/GameAuth.m b/ios/GameAuth.m
index 64a7912..732ebb8 100644
--- a/ios/GameAuth.m
+++ b/ios/GameAuth.m
@@ -4,7 +4,7 @@
 
 @interface RCT_EXTERN_MODULE(GameAuth, RCTEventEmitter)
 
-RCT_EXTERN_METHOD(initAuth)
+RCT_EXTERN_METHOD(initAuth: (BOOL)showUIIfUnauthenticated)
 RCT_EXTERN_METHOD(isAuthenticated: (RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)
 RCT_EXTERN_METHOD(getPlayer: (RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)
 RCT_EXTERN_METHOD(getServerAuth: (RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)
diff --git a/ios/GameAuth.swift b/ios/GameAuth.swift
index 127fc32..76978fb 100644
--- a/ios/GameAuth.swift
+++ b/ios/GameAuth.swift
@@ -2,33 +2,52 @@ import GameKit
 
 @objc(GameAuth)
 class GameAuth: RCTEventEmitter {
-  let C_OnAuthenticated: String = "OnAuthenticate";
-
-  open override func supportedEvents() -> [String] {
-    return [self.C_OnAuthenticated];
-  }
-
+    let C_OnAuthenticated: String = "OnAuthenticate";
+    var loginUI: UIViewController? = nil;
+    
+    open override func supportedEvents() -> [String] {
+        return [self.C_OnAuthenticated];
+    }
+    
     @objc
-    func initAuth() {
+    func initAuth(_ showUIIfUnauthenticated: Bool) {
         let ui = UIApplication.shared.keyWindow?.rootViewController;
-
+        
         let player = GKLocalPlayer.local
-        player.authenticateHandler = { vc, error in
-            if(vc != nil) {
-                ui?.present(vc!, animated: true, completion: nil);
+        if(player.authenticateHandler == nil) {
+            player.authenticateHandler = { vc, error in
+                self.loginUI = vc;
+                if(vc != nil) {
+                    if(showUIIfUnauthenticated) {
+                        ui?.present(vc!, animated: true, completion: nil);
+                    }
+                    else {
+                        self.sendEvent(withName: self.C_OnAuthenticated, body: ["isAuthenticated":false, "error": error])
+                    }
+                }
+                else {
+                    self.sendEvent(withName: self.C_OnAuthenticated, body: ["isAuthenticated":player.isAuthenticated, "error": error])
+                }
+            }
+        }
+        else {
+            if(player.isAuthenticated) {
+                self.sendEvent(withName: self.C_OnAuthenticated, body: ["isAuthenticated":player.isAuthenticated, "error": nil])
             }
             else {
-                self.sendEvent(withName: self.C_OnAuthenticated, body: ["isAuthenticated":player.isAuthenticated, "error": error])
+                if(showUIIfUnauthenticated && self.loginUI != nil) {
+                    ui?.present(self.loginUI!, animated: true, completion: nil);
+                }
             }
-        }      
+        }
     }
-
+    
     @objc(isAuthenticated:rejecter:)
     func isAuthenticated(_ resolve: @escaping RCTPromiseResolveBlock, rejecter reject: @escaping RCTPromiseRejectBlock ) -> Void {
         let player = GKLocalPlayer.local
         resolve(player.isAuthenticated)
     }
-
+    
     @objc(getPlayer:rejecter:)
     func getPlayer(_ resolve: @escaping RCTPromiseResolveBlock, rejecter reject: @escaping RCTPromiseRejectBlock ) -> Void {
         let player = GKLocalPlayer.local
@@ -44,7 +63,7 @@ class GameAuth: RCTEventEmitter {
             reject("Unautheticated", "Unautheticated", nil)
         }
     }
-
+    
     @objc(getServerAuth:rejecter:)
     func getServerAuth(_ resolve: @escaping RCTPromiseResolveBlock, rejecter reject: @escaping RCTPromiseRejectBlock ) -> Void {
         let player = GKLocalPlayer.local
@@ -63,7 +82,7 @@ class GameAuth: RCTEventEmitter {
                         "salt" : salt?.base64EncodedString() ?? "",
                         "timestamp": timestamp
                     ]
-
+                    
                     resolve(data);
                 }
             }
@@ -72,7 +91,7 @@ class GameAuth: RCTEventEmitter {
             reject("Unauthenticated", "", nil);
         }
     }
-
+    
     @objc static override func requiresMainQueueSetup() -> Bool {
         return true 
     } 
diff --git a/src/index.tsx b/src/index.tsx
index 325b09f..d6398bd 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -63,7 +63,7 @@ if (NativeModules.GameAuth) {
 }
 
 type GameCenterAuthType = {
-  initAuth(): void;
+  initAuth(showUIIfUnauthenticated: boolean): void;
   isAuthenticated(): Promise<Boolean>;
   getPlayer(): Promise<Player>;
   getServerAuth(): Promise<IdentityVerificationSignature>;