diff --git a/data/rfid.html b/data/rfid.html
index 9709e92..5721f70 100644
--- a/data/rfid.html
+++ b/data/rfid.html
@@ -88,7 +88,7 @@
 
             try {
                 // API Aufruf zum Erstellen des Benutzers
-                const response = await fetch(`/api/users`, {
+                const response = await fetch(`/api/users/insert`, {
                     method: 'POST',
                     headers: {
                         'Content-Type': 'application/json',
@@ -109,10 +109,7 @@
                     
                     // Formular zurücksetzen
                     clearForm();
-                    
-                    // Daten neu laden
-                    await loadUserData();
-                    
+                                        
                     // UID Feld fokussieren für nächsten Eintrag
                     setTimeout(() => {
                         document.getElementById('uid').focus();
@@ -214,7 +211,7 @@
         async function readRFIDUID() {
             const readBtn = document.getElementById('readUidBtn');
             const uidInput = document.getElementById('uid');
-            
+
             // Button Status ändern
             readBtn.disabled = true;
             readBtn.className = 'read-uid-btn reading';
@@ -223,7 +220,7 @@
             try {
                 // API Aufruf zum RFID Reader
                 const response = await fetch(`/api/rfid/read`, {
-                    method: 'POST',
+                    method: 'GET',
                     headers: {
                         'Content-Type': 'application/json',
                     }
@@ -233,17 +230,17 @@
 
                 if (result.success && result.uid) {
                     // UID in das Eingabefeld setzen
-                    uidInput.value = result.uid.toUpperCase();
+                    uidInput.value = result.uid.match(/.{1,2}/g).join(':').toUpperCase();
                     uidInput.focus();
-                    
+
                     // Visuelles Feedback
                     uidInput.style.borderColor = '#28a745';
                     setTimeout(() => {
                         uidInput.style.borderColor = '#e1e5e9';
                     }, 2000);
-                    
+
                     showSuccessMessage('UID erfolgreich gelesen!');
-                    
+
                     // Automatisch zum nächsten Feld springen
                     setTimeout(() => {
                         document.getElementById('vorname').focus();
@@ -253,7 +250,7 @@
                     // Fehler beim Lesen
                     const errorMsg = result.error || 'Keine UID gefunden';
                     showErrorMessage(`RFID Fehler: ${errorMsg}`);
-                    
+
                     // UID Feld rot markieren
                     uidInput.style.borderColor = '#dc3545';
                     setTimeout(() => {
@@ -264,13 +261,13 @@
             } catch (error) {
                 console.error('Fehler beim Lesen der UID:', error);
                 showErrorMessage('Verbindungsfehler zum RFID Reader. Bitte prüfen Sie die Verbindung.');
-                
+
                 // UID Feld rot markieren
                 uidInput.style.borderColor = '#dc3545';
                 setTimeout(() => {
                     uidInput.style.borderColor = '#e1e5e9';
                 }, 3000);
-                
+
             } finally {
                 // Button Status zurücksetzen
                 readBtn.disabled = false;
diff --git a/platformio.ini b/platformio.ini
index 8b70908..5262536 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,7 +14,6 @@ default_envs = esp32dev
 [env]
 platform = https://github.com/platformio/platform-espressif32.git
 framework = arduino
-lib_deps = esp32async/ESPAsyncWebServer@^3.7.7
 lib_compat_mode = strict
 
 [env:wemos_d1_mini32]
diff --git a/src/databasebackend.h b/src/databasebackend.h
index 22f1b87..704ab08 100644
--- a/src/databasebackend.h
+++ b/src/databasebackend.h
@@ -81,6 +81,43 @@ UserData checkUser(const String& uid) {
     return userData;
 }
 
+//Function to enter user data into the database
+bool enterUserData(const String& uid, const String& firstname, const String& lastname, int alter) {
+    if (!backendOnline()) {
+        Serial.println("No internet connection, cannot enter user data.");
+        return false;
+    }
+
+    HTTPClient http;
+    http.begin(String(BACKEND_SERVER) + "/api/users/insert");
+    http.addHeader("Content-Type", "application/json");
+    http.addHeader("Authorization", String("Bearer ") + BACKEND_TOKEN);
+    
+    // Create JSON payload
+    StaticJsonDocument<256> requestDoc;
+    requestDoc["uid"] = uid;
+    requestDoc["vorname"] = firstname;
+    requestDoc["nachname"] = lastname;
+    requestDoc["alter"] = alter;
+    
+    String requestBody;
+    serializeJson(requestDoc, requestBody);
+    
+    int httpCode = http.POST(requestBody);
+    
+    if (httpCode == HTTP_CODE_CREATED) {
+        Serial.println("User data entered successfully.");
+        http.end();
+        return true;
+    } else {
+        Serial.printf("Failed to enter user data, HTTP code: %d\n", httpCode);
+        http.end();
+        return false;
+    }
+}
+
+
+
 // Keep this for backward compatibility
 bool userExists(const String& uid) {
     return checkUser(uid).exists;
diff --git a/src/master.cpp b/src/master.cpp
index cf96831..a97188a 100644
--- a/src/master.cpp
+++ b/src/master.cpp
@@ -19,7 +19,7 @@
 #include <webserverrouter.h>
 #include <communication.h>
 #include <databasebackend.h>
-
+#include <rfid.h>
 
 const char* firmwareversion = "1.0.0"; // Version der Firmware
 
@@ -249,8 +249,9 @@ void setup() {
   setupTimeAPI(server);
   setupLicenceAPI(server);
   setupDebugAPI(server);
-  setupBackendRoutes(server);// Speichere WLAN-Einstellungen, falls noch nicht vorhanden
-
+  setupBackendRoutes(server);
+  setupRFIDRoute(server);
+  
 
   // Gespeicherte Daten laden
   loadButtonConfig();
@@ -264,6 +265,7 @@ void setup() {
   setupWebSocket();
   setupLED();
   setupMqttServer(); // MQTT Server initialisieren
+  setupRFID();
 
   
 }
@@ -272,4 +274,5 @@ void loop() {
   checkAutoReset();
   loopMqttServer(); // MQTT Server in der Loop aufrufen
   loopWebSocket();
+  loopRFID(); // RFID Loop aufrufen
 }
diff --git a/src/rfid.h b/src/rfid.h
index a840930..89c5837 100644
--- a/src/rfid.h
+++ b/src/rfid.h
@@ -1,141 +1,289 @@
 #pragma once
 #include <Arduino.h>
-#include <WebServer.h>
 #include <ArduinoJson.h>
 #include <SPI.h>
 #include <MFRC522.h>
 
 // RFID Konfiguration
-#define SS_PIN 21
-#define RST_PIN 22
-MFRC522 mfrc522(SS_PIN, RST_PIN);
+#define RST_PIN 21 // Configurable, see typical pin layout above
+#define SS_PIN 5   // Configurable, see typical pin layout above
 
-// Webserver auf Port 80
-WebServer server(80);
 
-// Struktur für Benutzerdaten
-struct User {
-  String uid;
-  String vorname;
-  String nachname;
-  int alter;
-  unsigned long timestamp;
-};
+MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance
+std::map<String, unsigned long> blockedUIDs; // Map to store blocked UIDs and their timestamps
+const unsigned long BLOCK_DURATION = 10 * 1000; // 10 Seconds in milliseconds
+
+// Neue Variablen für API-basiertes Lesen
+bool rfidReadRequested = false;
+String lastReadUID = "";
+bool rfidReadSuccess = false;
+unsigned long rfidReadStartTime = 0;
+const unsigned long RFID_READ_TIMEOUT = 10000; // 10 Sekunden Timeout für API Requests
+
 
 void setupRFID() {
 
   // SPI und RFID initialisieren
-  SPI.begin();
-  mfrc522.PCD_Init();
-  
+  SPI.begin();       // Init SPI bus
+  mfrc522.PCD_Init(); // Init MFRC522
+  delay(4);          // Optional delay. Some boards need more time after init to be ready
+  mfrc522.PCD_DumpVersionToSerial(); // Show details of PCD - MFRC522 Card Reader details
 
 }
 
 
-void setupRoutes() {
-  // CORS Header für alle Anfragen
-  server.onNotFound([]() {
-    if (server.method() == HTTP_OPTIONS) {
-      server.sendHeader("Access-Control-Allow-Origin", "*");
-      server.sendHeader("Access-Control-Allow-Methods", "GET,POST,PUT,DELETE,OPTIONS");
-      server.sendHeader("Access-Control-Allow-Headers", "Content-Type");
-      server.send(200);
-    } else {
-      server.send(404, "text/plain", "Not Found");
-    }
-  });
-  
-  // API: RFID UID lesen
-  server.on("/api/rfid/read", HTTP_POST, []() {
-    server.sendHeader("Access-Control-Allow-Origin", "*");
-    server.sendHeader("Content-Type", "application/json");
-    
-    String uid = readRFIDCard();
-    
-    DynamicJsonDocument doc(200);
-    
-    if (uid != "") {
-      doc["success"] = true;
-      doc["uid"] = uid;
-      Serial.println("UID gelesen: " + uid);
-    } else {
-      doc["success"] = false;
-      doc["error"] = "Keine RFID Karte gefunden";
-    }
-    
-    String response;
-    serializeJson(doc, response);
-    server.send(200, "application/json", response);
-  });
-  
-  // API: Neuen Benutzer erstellen
-  server.on("/api/users", HTTP_POST, []() {
-    server.sendHeader("Access-Control-Allow-Origin", "*");
-    server.sendHeader("Content-Type", "application/json");
-    
-    DynamicJsonDocument doc(1024);
-    DeserializationError error = deserializeJson(doc, server.arg("plain"));
-    
-    if (error) {
-      DynamicJsonDocument errorDoc(200);
-      errorDoc["success"] = false;
-      errorDoc["error"] = "Ungültige JSON Daten";
-      String response;
-      serializeJson(errorDoc, response);
-      server.send(400, "application/json", response);
-      return;
-    }
-    
-    // Daten aus JSON extrahieren
-    String uid = doc["uid"].as<String>();
-    String vorname = doc["vorname"].as<String>();
-    String nachname = doc["nachname"].as<String>();
-    int alter = doc["alter"].as<int>();
-    
-    
-    // Prüfen ob UID bereits existiert
-    
-
-    
-    // Benutzer hinzufügen
 
 
 
-    // Erfolgreiche Antwort
-    DynamicJsonDocument successDoc(200);
-    successDoc["success"] = true;
-    successDoc["message"] = "Benutzer erfolgreich gespeichert";
-    String response;
-    serializeJson(successDoc, response);
-    server.send(201, "application/json", response);
-    
-    Serial.println("Neuer Benutzer: " + vorname + " " + nachname + " (UID: " + uid + ")");
-  });
-}
-
-// RFID Karte lesen
-String readRFIDCard() {
-  // Prüfen ob neue Karte vorhanden
+void handleAutomaticRFID() {
   if (!mfrc522.PICC_IsNewCardPresent()) {
-    return "";
+    return;
+  }
+
+  // Select one of the cards
+  if (!mfrc522.PICC_ReadCardSerial()) {
+    return;
+  }
+
+  // Read the UID
+  String uid = "";
+  for (byte i = 0; i < mfrc522.uid.size; i++) {
+    if (i > 0)
+      uid += ":";
+    if (mfrc522.uid.uidByte[i] < 0x10)
+      uid += "0";
+    uid += String(mfrc522.uid.uidByte[i], HEX);
+  }
+
+  // Check if the UID is blocked
+  unsigned long currentTime = millis();
+  if (blockedUIDs.find(uid) != blockedUIDs.end()) {
+    if (currentTime - blockedUIDs[uid] < BLOCK_DURATION) {
+      Serial.print(F("UID blocked for 10 seconds. Remaining time: "));
+      Serial.print((BLOCK_DURATION - (currentTime - blockedUIDs[uid])) / 1000);
+      Serial.println(F(" seconds."));
+      Serial.println(uid);
+      return;
+    } else {
+      // Remove the UID from the blocked list if the block duration has passed
+      blockedUIDs.erase(uid);
+    }
+  }
+
+  // Process the UID
+  Serial.print(F("UID: "));
+  Serial.println(uid);
+
+  // Block the UID for 10 seconds
+  blockedUIDs[uid] = currentTime;
+  //show the remaining time for the block
+  Serial.print(F("UID blocked for 10 seconds. Remaining time: "));
+  Serial.print((BLOCK_DURATION - (currentTime - blockedUIDs[uid])) / 1000);
+  Serial.println(F(" seconds."));
+
+  // Halt the card
+  mfrc522.PICC_HaltA();
+}
+
+// Neue Funktion für API-basiertes RFID Lesen
+void handleAPIRFIDRead() {
+  unsigned long currentTime = millis();
+  
+  // Timeout prüfen
+  if (currentTime - rfidReadStartTime > RFID_READ_TIMEOUT) {
+    Serial.println("RFID API Timeout - keine Karte erkannt");
+    rfidReadRequested = false;
+    rfidReadSuccess = false;
+    lastReadUID = "";
+    return;
+  }
+  
+  // Prüfen ob neue Karte vorhanden ist
+  if (!mfrc522.PICC_IsNewCardPresent()) {
+    return;
   }
   
   // Karte auswählen
   if (!mfrc522.PICC_ReadCardSerial()) {
-    return "";
+    return;
   }
   
-  // UID zusammensetzen
+  // UID für API lesen (ohne Doppelpunkt-Trenner, Großbuchstaben)
   String uid = "";
   for (byte i = 0; i < mfrc522.uid.size; i++) {
-    if (i > 0) uid += ":";
-    if (mfrc522.uid.uidByte[i] < 0x10) uid += "0";
+    if (mfrc522.uid.uidByte[i] < 0x10) {
+      uid += "0"; // Leading Zero für einstellige Hex-Werte
+    }
     uid += String(mfrc522.uid.uidByte[i], HEX);
   }
+  
+  // UID in Großbuchstaben konvertieren
   uid.toUpperCase();
   
-  // Karte deaktivieren
-  mfrc522.PICC_HaltA();
+  Serial.println("RFID API UID gelesen: " + uid);
   
-  return uid;
+  // Ergebnis speichern
+  lastReadUID = uid;
+  rfidReadSuccess = true;
+  rfidReadRequested = false;
+  
+  // Karte "halt" setzen
+  mfrc522.PICC_HaltA();
+  mfrc522.PCD_StopCrypto1();
 }
+
+// API Funktion: RFID Lesevorgang starten
+void startRFIDRead() {
+  Serial.println("RFID API Lesevorgang gestartet...");
+  rfidReadRequested = true;
+  rfidReadSuccess = false;
+  lastReadUID = "";
+  rfidReadStartTime = millis();
+}
+
+// API Funktion: Prüfen ob Lesevorgang abgeschlossen
+bool isRFIDReadComplete() {
+  return !rfidReadRequested;
+}
+
+// API Funktion: Ergebnis des Lesevorgangs abrufen
+String getRFIDReadResult(bool& success) {
+  success = rfidReadSuccess;
+  return lastReadUID;
+}
+
+void setupRFIDRoute(AsyncWebServer& server) {
+    server.on("/api/rfid/read", HTTP_GET, [](AsyncWebServerRequest *request) {
+        Serial.println("api/rfid/read");
+
+        // Start RFID-Lesevorgang
+        startRFIDRead();
+        unsigned long startTime = millis();
+
+        // Warten, bis eine UID gelesen wird oder Timeout eintritt
+        while (!isRFIDReadComplete()) {
+            if (millis() - startTime > RFID_READ_TIMEOUT) {
+                break;
+            }
+            delay(10); // Kurze Pause, um die CPU nicht zu blockieren
+        }
+
+        DynamicJsonDocument response(200);
+
+        if (rfidReadSuccess && lastReadUID.length() > 0) {
+            response["success"] = true;
+            response["uid"] = lastReadUID;
+            response["message"] = "UID erfolgreich gelesen";
+        } else {
+            response["success"] = false;
+            response["error"] = "Keine RFID Karte erkannt oder Timeout";
+            response["uid"] = "";
+        }
+
+        String jsonString;
+        serializeJson(response, jsonString);
+        request->send(200, "application/json", jsonString);
+    });
+
+server.on("/api/users/insert", HTTP_POST, [](AsyncWebServerRequest *request) {}, NULL, [](AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) {
+    Serial.println("/api/users/insert");
+
+    // Parse the incoming JSON payload
+    DynamicJsonDocument doc(512);
+    DeserializationError error = deserializeJson(doc, data, len);
+
+    DynamicJsonDocument response(200);
+
+    if (error) {
+        Serial.println("Fehler beim Parsen der JSON-Daten");
+        response["success"] = false;
+        response["error"] = "Ungültige JSON-Daten";
+    } else {
+        // Extract user data from the JSON payload
+        String uid = doc["uid"] | "";
+        String vorname = doc["vorname"] | "";
+        String nachname = doc["nachname"] | "";
+        int alter = doc["alter"] | 0;
+
+        // Validate the data
+        if (uid.isEmpty() || vorname.isEmpty() || nachname.isEmpty() || alter <= 0) {
+            Serial.println("Ungültige Eingabedaten");
+            response["success"] = false;
+            response["error"] = "Ungültige Eingabedaten";
+        } else {
+            // Process the data using the enterUserData function
+            Serial.println("Benutzerdaten empfangen:");
+            Serial.println("UID: " + uid);
+            Serial.println("Vorname: " + vorname);
+            Serial.println("Nachname: " + nachname);
+            Serial.println("Alter: " + String(alter));
+
+            bool dbSuccess = enterUserData(uid, vorname, nachname, alter);
+
+            if (dbSuccess) {
+                response["success"] = true;
+                response["message"] = "Benutzer erfolgreich gespeichert";
+            } else {
+                response["success"] = false;
+                response["error"] = "Fehler beim Speichern in der Datenbank";
+            }
+        }
+    }
+
+    // Send the response back to the client
+    String jsonString;
+    serializeJson(response, jsonString);
+    request->send(200, "application/json", jsonString);
+});
+
+
+
+
+
+
+
+}
+
+
+
+// API Funktion: RFID Reader Status prüfen
+bool checkRFIDReaderStatus() {
+  byte version = mfrc522.PCD_ReadRegister(mfrc522.VersionReg);
+  
+  // Bekannte MFRC522 Versionen: 0x91, 0x92
+  if (version == 0x91 || version == 0x92) {
+    Serial.println("RFID Reader OK (Version: 0x" + String(version, HEX) + ")");
+    return true;
+  } else {
+    Serial.println("RFID Reader Fehler (Version: 0x" + String(version, HEX) + ")");
+    return false;
+  }
+}
+
+// Hilfsfunktion: Blockierte UIDs aufräumen
+void cleanupBlockedUIDs() {
+  unsigned long currentTime = millis();
+  
+  // Iterator für sicheres Löschen während der Iteration
+  for (auto it = blockedUIDs.begin(); it != blockedUIDs.end();) {
+    if (currentTime - it->second >= BLOCK_DURATION) {
+      it = blockedUIDs.erase(it);
+    } else {
+      ++it;
+    }
+  }
+}
+
+void loopRFID(){
+  // Originale Funktionalität für automatisches Lesen
+  if (!rfidReadRequested) {
+    handleAutomaticRFID();
+  }
+  
+  // API-basiertes Lesen verarbeiten
+  if (rfidReadRequested) {
+    handleAPIRFIDRead();
+  }
+}
+
+