diff --git a/lib/app_version.dart b/lib/app_version.dart
index c5fffa0..66564b8 100644
--- a/lib/app_version.dart
+++ b/lib/app_version.dart
@@ -1,3 +1,3 @@
 /// Manuell mit pubspec.yaml synchron halten (siehe timemaster-mobile,
 /// gleiche Konvention – kein package_info_plus während aktiver Feldtests).
-const String kAppVersion = '0.1.0+1';
+const String kAppVersion = '0.1.1+2';
diff --git a/lib/screens/login_screen.dart b/lib/screens/login_screen.dart
index 9a76611..6cbb63a 100644
--- a/lib/screens/login_screen.dart
+++ b/lib/screens/login_screen.dart
@@ -2,6 +2,7 @@ import 'dart:async';
 import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:nfc_manager/nfc_manager.dart';
+import 'package:nfc_manager/nfc_manager_android.dart';
 import '../app_version.dart';
 import '../models/kiosk_session.dart';
 import '../services/api_client.dart';
@@ -66,9 +67,9 @@ class _LoginScreenState extends State<LoginScreen> {
   }
 
   Future<void> _startNfcScan() async {
-    final available = await NfcManager.instance.isAvailable();
-    if (!available) {
-      setState(() => _error = 'NFC ist auf diesem Gerät nicht verfügbar.');
+    final availability = await NfcManager.instance.checkAvailability();
+    if (availability != NfcAvailability.enabled) {
+      setState(() => _error = 'NFC ist nicht verfügbar oder deaktiviert (Status: ${availability.name}).');
       return;
     }
     setState(() {
@@ -78,6 +79,7 @@ class _LoginScreenState extends State<LoginScreen> {
     });
     try {
       await NfcManager.instance.startSession(
+        pollingOptions: {NfcPollingOption.iso14443, NfcPollingOption.iso15693, NfcPollingOption.iso18092},
         onDiscovered: (NfcTag tag) async {
           final uid = _extractUid(tag);
           await NfcManager.instance.stopSession();
@@ -99,15 +101,12 @@ class _LoginScreenState extends State<LoginScreen> {
     }
   }
 
+  /// Android-spezifisch (siehe nfc_manager 4.x: NfcTagAndroid.from(tag).id).
+  /// Nur Android relevant – Kiosk-Tablets, kein iOS-Support geplant.
   String? _extractUid(NfcTag tag) {
-    for (final key in ['nfca', 'nfcb', 'nfcf', 'nfcv', 'mifareclassic', 'mifareultralight', 'isodep']) {
-      final techData = tag.data[key];
-      if (techData is Map && techData['identifier'] != null) {
-        final bytes = (techData['identifier'] as List<dynamic>).cast<int>();
-        return bytes.map((b) => b.toRadixString(16).padLeft(2, '0')).join().toUpperCase();
-      }
-    }
-    return null;
+    final androidTag = NfcTagAndroid.from(tag);
+    if (androidTag == null) return null;
+    return androidTag.id.map((b) => b.toRadixString(16).padLeft(2, '0')).join().toUpperCase();
   }
 
   Future<void> _submitNfc() async {
diff --git a/pubspec.yaml b/pubspec.yaml
index 349313b..ede7c91 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,7 +1,7 @@
 name: timemaster_kiosk
 description: TimeMaster Kiosk – Stempeluhr für Android-Tablets hinter VPN
 publish_to: 'none'
-version: 0.1.0+1
+version: 0.1.1+2
 
 environment:
   sdk: '>=3.3.0 <4.0.0'
@@ -12,7 +12,7 @@ dependencies:
   cupertino_icons: ^1.0.8
   dio: ^5.7.0
   flutter_secure_storage: ^9.2.2
-  nfc_manager: ^3.5.0
+  nfc_manager: ^4.2.1
 
 dev_dependencies:
   flutter_test: