diff --git a/Frontend/src/app/auth/auth.guard.ts b/Frontend/src/app/auth/auth.guard.ts
index 2dc1f4a..650be5e 100644
--- a/Frontend/src/app/auth/auth.guard.ts
+++ b/Frontend/src/app/auth/auth.guard.ts
@@ -13,16 +13,29 @@ export class AuthGuard  {
     private router$: Router,
   ) {}
   canActivate(): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {
-    if (this.auth$.user && this.auth$.webCredentials) {
+    if (this.auth$.isAuthenticated()) {
       if (this.loginUrl) {
         this.router$.navigate([this.loginUrl]);
         this.loginUrl = null;
       }
       return true;
     } else {
-      this.loginUrl = window.location.pathname;
-      this.router$.navigate(['']);
-      return false;
+      console.log('Not auth try to wait');
+      return this.tryWaitForAuthData();
     }
   }  
+  async tryWaitForAuthData(): Promise<boolean> {
+    return new Promise((resolve) => {
+      setTimeout(() => {
+        if (this.auth$.isAuthenticated()) {
+          resolve(true);
+        } else {
+          console.log('GoToLogin');
+          this.loginUrl = window.location.pathname;
+          this.router$.navigate(['']);
+          resolve(false);
+        }
+      }, 100);
+    })
+  }
 }
diff --git a/Frontend/src/app/auth/auth.service.ts b/Frontend/src/app/auth/auth.service.ts
index b632e12..5eb5537 100644
--- a/Frontend/src/app/auth/auth.service.ts
+++ b/Frontend/src/app/auth/auth.service.ts
@@ -16,9 +16,14 @@ export class AuthService {
   user!: User;
   apiTokenExpirationTime!: Moment;
 
+  bc!: BroadcastChannel;
+
   constructor(
     private http$: HttpClient,
-  ) { }
+  ) { 
+    this.createBroadcastChannel();
+    this.askForAuthData();
+  }
 
   ping() {
     return new Promise((resolve, reject) => {
@@ -64,4 +69,73 @@ export class AuthService {
   getAPITokenObservable(): Observable<void> {
     return from(this.getAPIToken());
   }
+  isAuthenticated(): boolean {
+    return !!this.apiToken && 
+      !!this.webCredentials &&
+      !!this.user &&
+      this.apiTokenExpirationTime.isAfter(moment());
+  }
+  // broadcastChannel
+  createBroadcastChannel() {
+    try {
+      this.bc = new BroadcastChannel('auth');
+      this.bc.onmessage = (event: MessageEvent<AuthMessage>) => { 
+        this.broadcastListener(event);
+      }
+    } catch (e) {
+      console.log('eee', e);
+    }
+  }
+  broadcastListener(event: MessageEvent<AuthMessage>) {
+    switch (event.data.type) {
+      case BroadcastType.REQUEST_AUTH_DATA:
+        this.sendAuthData();
+        break;
+      case BroadcastType.SEND_AUTH_DATA:
+        this.recieveAuthData(event.data.data!);
+        break;
+      case BroadcastType.LOGOUT:
+        break;
+      default:
+        break;
+    }
+  }
+  askForAuthData() {
+    this.bc.postMessage({ 
+      type: BroadcastType.REQUEST_AUTH_DATA
+    });
+  }
+  sendAuthData() { 
+    this.bc.postMessage({ 
+      type: BroadcastType.SEND_AUTH_DATA,
+      data: {
+        webCredentials: this.webCredentials,
+        apiToken: this.apiToken,
+        apiTokenExpirationTime: this.apiTokenExpirationTime.toISOString()
+      }
+    });
+  }
+  recieveAuthData(data: AuthData) {
+    this.webCredentials = data.webCredentials;
+    this.apiToken = data.apiToken;
+    this.apiTokenExpirationTime = moment(data.apiTokenExpirationTime);
+    this.retrieveUserFromCredentials(this.webCredentials);
+  }
 }
+
+enum BroadcastType {
+  REQUEST_AUTH_DATA = 'request',
+  SEND_AUTH_DATA  = 'send',
+  LOGOUT = 'logout'
+}
+interface AuthData {
+  webCredentials: string,
+  apiToken: string,
+  apiTokenExpirationTime: string
+}
+interface AuthMessage {
+  sender: string,
+  type: BroadcastType, 
+  data?: AuthData
+}
+