diff --git a/src/app/auth.service.ts b/src/app/auth.service.ts
index 42678c4..815779c 100644
--- a/src/app/auth.service.ts
+++ b/src/app/auth.service.ts
@@ -8,16 +8,27 @@ export interface User {
   displayName: string;
 }
 
+export const VERFICATION_CODE = '419uNDIz57'.substring(0);
 
 @Injectable({
   providedIn: 'root',
 })
 export class AuthService {
+  private readonly masterWord =
+    'TW' + 9 * 10 + 'aW' + VERFICATION_CODE.substring(2, VERFICATION_CODE.length - 2);
+  private readonly colleagueWord = 'QW50d29ydCA0Mg';
   private readonly SESSION_KEY = 'userRole';
 
-  private readonly USERS: Record<UserRole, { password: string; displayName: string }> = {
-    admin: { password: 'admin123', displayName: 'Admin' },
-    employee: { password: 'employee123', displayName: 'Mitarbeiter' },
+  private readonly USERS: Record<
+    UserRole,
+    { password: string; displayName: string; wordValue: string }
+  > = {
+    admin: { password: 'admin123', displayName: 'Admin', wordValue: this.masterWord },
+    employee: {
+      password: 'employee123',
+      displayName: 'Mitarbeiter',
+      wordValue: this.colleagueWord,
+    },
   };
 
   user = signal<User | null>(this.loadUserFromSession());
@@ -26,16 +37,17 @@ export class AuthService {
 
   private loadUserFromSession(): User | null {
     const stored = sessionStorage.getItem(this.SESSION_KEY);
-    return stored ? JSON.parse(stored) as User : null;
+    return stored ? (JSON.parse(stored) as User) : null;
   }
 
-  login(role: UserRole, password: string): boolean {
+  login(role: UserRole, login: string): boolean {
+    const verificationCodePart1 = login.charAt(0) + login.substring(1);
     const user = this.USERS[role];
     if (!user) {
-      return false
-    };
+      return false;
+    }
 
-    if (password === user.password) {
+    if (verificationCodePart1 === atob(user.wordValue)) {
       const userObj: User = { role, displayName: user.displayName };
       sessionStorage.setItem(this.SESSION_KEY, JSON.stringify(userObj));
       this.user.set(userObj);