diff --git a/src/main/java/com/example/vpr_javafx/Data.java b/src/main/java/com/example/vpr_javafx/Data.java
index f8f7815..88cfd5c 100644
--- a/src/main/java/com/example/vpr_javafx/Data.java
+++ b/src/main/java/com/example/vpr_javafx/Data.java
@@ -1,6 +1,10 @@
 package com.example.vpr_javafx;
 
+import javafx.fxml.FXML;
 import javafx.scene.control.Alert;
+import javafx.scene.control.Label;
+import javafx.scene.control.PasswordField;
+import javafx.scene.control.TextField;
 
 import java.io.File;
 import java.io.FileWriter;
@@ -9,6 +13,7 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Scanner;
 import java.util.regex.Matcher;
@@ -22,6 +27,10 @@ import java.util.regex.Pattern;
  */
 public class Data {
     private String pathRead;
+    @FXML
+    private TextField tfPhone;
+    @FXML
+    private PasswordField pfPassword;
 
     public Data(String pathRead) {
         this.pathRead = pathRead;
@@ -255,13 +264,19 @@ public class Data {
      * @return boolean inputValid
      * @author Kevin Maier
      */
-    public boolean validateData(String password, String phoneNumber)
+    public boolean validateData(TextField tfPhone, PasswordField pfPassword)
     {
         boolean phoneNumberMatchFound;
         boolean passwordMatchFound;
         boolean phoneNumberValid = false;
         boolean passwordValid = false;
 
+        LoginDatei file = new LoginDatei("user.txt");
+        HashMap<String, String> users = file.readFile();
+
+        String phoneNumber = tfPhone.getText();
+        String password = pfPassword.getText();
+
         Pattern phoneNumberPattern = Pattern.compile("[0-9]*");
         Pattern passwordPattern = Pattern.compile("^(?=.*[A-Za-z])(?=.*\\d)[A-Za-z\\d]{8,}$");
 
@@ -279,7 +294,7 @@ public class Data {
         phoneNumberMatchFound = phoneNumberMatcher.find();
         passwordMatchFound = passwordMatcher.find();
 
-        if (!phoneNumberMatchFound || phoneNumber.length() >= 15)
+        if (!users.containsKey(phoneNumber) || !phoneNumberMatchFound || phoneNumber.length() >= 15)
         {
             Alert alert = new Alert(Alert.AlertType.WARNING);
             alert.setContentText("Login fehlgeschlagen. Die eingegebene Handynummer ist nicht valide.");
@@ -291,7 +306,7 @@ public class Data {
             phoneNumberValid = true;
         }
 
-        if (!passwordMatchFound || password.length() <8)
+        if (!users.get(phoneNumber).equals(password) || !passwordMatchFound || password.length() <8)
         {
             Alert alert = new Alert(Alert.AlertType.WARNING);
             alert.setContentText("Login fehlgeschlagen. Das eingegebene Passwort ist nicht valide.");
diff --git a/src/main/java/com/example/vpr_javafx/HelloController.java b/src/main/java/com/example/vpr_javafx/HelloController.java
index 3b8b6aa..3b83fce 100644
--- a/src/main/java/com/example/vpr_javafx/HelloController.java
+++ b/src/main/java/com/example/vpr_javafx/HelloController.java
@@ -86,11 +86,13 @@ public class HelloController {
     private TextField tfPhone;
     @FXML
     private PasswordField pfPassword;
+    @FXML
+    private Label allergene;
 
     private Stage stage;
     private Scene scene;
-    @FXML
-    private Label allergene;
+
+
 
     @FXML
     private String veggieImageUrl = "pics/vegetarisch.png";
@@ -104,22 +106,8 @@ public class HelloController {
     @FXML
     protected void OnSignInButton(ActionEvent event) throws IOException
     {
-        LoginDatei file = new LoginDatei("user.txt");
-        HashMap<String, String> users = file.readFile();
-
-        String phoneNumber = tfPhone.getText();
-        String password = pfPassword.getText();
-
-        Data data = new Data("user.txt");
-        boolean inputValid = data.validateData(password, phoneNumber);
-
-        if (users.containsKey(phoneNumber) && inputValid)
-        {
-            if (users.get(phoneNumber).equals(password))
-            {
-
-            }
-        }
+      Data data = new Data("user.txt");
+      data.validateData(tfPhone, pfPassword);
     }
 
 
diff --git a/target/classes/com/example/vpr_javafx/Data.class b/target/classes/com/example/vpr_javafx/Data.class
index 006c0e6..13a593a 100644
Binary files a/target/classes/com/example/vpr_javafx/Data.class and b/target/classes/com/example/vpr_javafx/Data.class differ
diff --git a/user.txt b/user.txt
index 070c533..bf73a00 100644
--- a/user.txt
+++ b/user.txt
@@ -1,2 +1,2 @@
-Felix Düsterhaus;Sabine Gubitz;Detmolderstrasse 101,33102 Paderborn;1234567;Lisa,Peter;12345
-Kevin Pfannenstiel;Marlene Pfannenstiel;Fürstenallee 30, 33102 Paderborn;7654321;Anton;12345
+Felix Düsterhaus;Sabine Gubitz;Detmolderstrasse 101,33102 Paderborn;1234567;Lisa,Peter;12345678A
+Kevin Pfannenstiel;Marlene Pfannenstiel;Fürstenallee 30, 33102 Paderborn;7654321;Anton;12345678B