diff --git a/rescueapp/lib/start_triage_system/after_opening_airways.dart b/rescueapp/lib/start_triage_system/after_opening_airways.dart
index 55f05386b5fab9e36d39eef87dc7dbaf712102bf..fd175e21969e4be2738c932af474014a2b17cf82 100644
--- a/rescueapp/lib/start_triage_system/after_opening_airways.dart
+++ b/rescueapp/lib/start_triage_system/after_opening_airways.dart
@@ -1,9 +1,12 @@
 import 'package:flutter/material.dart';
+import 'triage_data.dart';
 
 import 'camera_access.dart';
 
 class AfterOpeningAirways extends StatefulWidget {
-  AfterOpeningAirways({Key key, this.title}) : super(key: key);
+  AfterOpeningAirways(bool isSpontaneousBreathingPresent, {Key key, this.title})
+      : super(key: key);
+
   final String title;
 
   @override
@@ -11,6 +14,8 @@ class AfterOpeningAirways extends StatefulWidget {
 }
 
 class _AfterOpeningAirwaysState extends State<AfterOpeningAirways> {
+  CategoryT1A categoryT1A = new CategoryT1A(true);
+  CategoryT4 categoryT4 = new CategoryT4(false);
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -117,11 +122,12 @@ class _AfterOpeningAirwaysState extends State<AfterOpeningAirways> {
                                 color: Colors.blue[900])),
                         color: Colors.blue,
                         onPressed: () {
+                          categoryT1A.isAfterOpeningAirways = true;
                           Navigator.push(
-                            context,
-                            MaterialPageRoute(
-                                builder: (context) => CameraAccess()),
-                          );
+                              context,
+                              MaterialPageRoute(
+                                  builder: (context) =>
+                                      CameraAccess(categoryT1A)));
                         }))),
             SizedBox(
               height: 10,
@@ -138,10 +144,11 @@ class _AfterOpeningAirwaysState extends State<AfterOpeningAirways> {
                                 color: Colors.blue[900])),
                         color: Colors.blue,
                         onPressed: () {
+                          categoryT4.isAfterOpeningAirways = false;
                           Navigator.push(
                             context,
                             MaterialPageRoute(
-                                builder: (context) => CameraAccess()),
+                                builder: (context) => CameraAccess(categoryT4)),
                           );
                         }))),
             SizedBox(
diff --git a/rescueapp/lib/start_triage_system/ambulatory.dart b/rescueapp/lib/start_triage_system/ambulatory.dart
index 29d975a482b0de6187898e6d12de403f9500e613..e561c93991b840f7096a1988ad7a3b53018d602c 100644
--- a/rescueapp/lib/start_triage_system/ambulatory.dart
+++ b/rescueapp/lib/start_triage_system/ambulatory.dart
@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'triage_data.dart';
 import 'camera_access.dart';
 import 'spontaneous_breathing_present.dart';
 
@@ -11,6 +12,8 @@ class Ambulatory extends StatefulWidget {
 }
 
 class _AmbulatoryState extends State<Ambulatory> {
+  CategoryT3 get categoryT3 => new CategoryT3();
+  Category get category => new Category(null, null);
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -62,7 +65,8 @@ class _AmbulatoryState extends State<Ambulatory> {
                             context,
                             MaterialPageRoute(
                                 builder: (context) =>
-                                    CameraAccess()),
+                                    CameraAccess(
+                                        categoryT3)),
                           );
                         } ))),
             SizedBox(
@@ -73,18 +77,24 @@ class _AmbulatoryState extends State<Ambulatory> {
                 height: 50,
                 child: Container(
                     child: RaisedButton(
-                        child: new Text('Nein',
+                        child
+                            : new Text('Nein',
                             style: TextStyle(
                                 fontSize: 20,
                                 fontWeight: FontWeight.w600,
                                 color: Colors.blue[900])),
                         color: Colors.blue,
                         onPressed: () {
+                          setState(() {
+                            category.isAmbulatory=false;
+                          });
+
                           Navigator.push(
                             context,
                             MaterialPageRoute(
                                 builder: (context) =>
-                                    SpontaneousBreathingPresent()),
+                                    SpontaneousBreathingPresent(category.isAmbulatory)),
+
                           );
                         }))),
             SizedBox(
diff --git a/rescueapp/lib/start_triage_system/breathing_frequency_per_minute.dart b/rescueapp/lib/start_triage_system/breathing_frequency_per_minute.dart
index a7df8916816bd9d2a18e8ca2a72d7e2314d2eed2..69c5f2962091d18cdf263163286ca58268d26067 100644
--- a/rescueapp/lib/start_triage_system/breathing_frequency_per_minute.dart
+++ b/rescueapp/lib/start_triage_system/breathing_frequency_per_minute.dart
@@ -1,9 +1,14 @@
 import 'package:flutter/material.dart';
+import 'camera_access.dart';
+import 'triage_data.dart';
 import 'circulation.dart';
 
 class BreathingFrequencyPerMinute extends StatefulWidget {
-  BreathingFrequencyPerMinute({Key key, this.title}) : super(key: key);
+
+
+  BreathingFrequencyPerMinute(bool isSpontaneousBreathingPresent,  {Key key, this.title}) : super(key: key);
   final String title;
+
   @override
   _BreathingFrequencyPerMinuteState createState() =>
       _BreathingFrequencyPerMinuteState();
@@ -11,6 +16,9 @@ class BreathingFrequencyPerMinute extends StatefulWidget {
 
 class _BreathingFrequencyPerMinuteState
     extends State<BreathingFrequencyPerMinute> {
+  Category2 get category2 => new Category2 (null, null);
+  CategoryT1B get categoryT1B => new CategoryT1B (false);
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -113,7 +121,13 @@ class _BreathingFrequencyPerMinuteState
                                 fontWeight: FontWeight.w600,
                                 color: Colors.blue[900])),
                         color: Colors.blue,
-                        onPressed: null))),
+                        onPressed: () {
+                          Navigator.push(
+                            context,
+                            MaterialPageRoute(
+                                builder: (context) => CameraAccess(categoryT1B)),
+                          );
+                        }))),
             SizedBox(
               height: 10,
             ),
@@ -129,10 +143,13 @@ class _BreathingFrequencyPerMinuteState
                                 color: Colors.blue[900])),
                         color: Colors.blue,
                         onPressed: () {
+                          setState(() {
+                            category2. isBreathingFrequencyPerMinute= false;
+                          });
                           Navigator.push(
                             context,
                             MaterialPageRoute(
-                                builder: (context) => CapillaryFillingTime()),
+                                builder: (context) => CapillaryFillingTime(category2.isBreathingFrequencyPerMinute)),
                           );
                         }))),
             SizedBox(
diff --git a/rescueapp/lib/start_triage_system/camera_access.dart b/rescueapp/lib/start_triage_system/camera_access.dart
index c35c347216fed764a7930d0427425f538e5f11da..2e8cd7e6f355e7fe774f5ce9f7e1bfe2428dd313 100644
--- a/rescueapp/lib/start_triage_system/camera_access.dart
+++ b/rescueapp/lib/start_triage_system/camera_access.dart
@@ -1,25 +1,20 @@
 import 'package:flutter/material.dart';
-
+import 'triage_data.dart';
 import 'lock_screen.dart';
 
 class CameraAccess extends StatefulWidget {
-
-  CameraAccess({Key key, this.title}) : super(key: key);
   final String title;
+  final Category category;
+
 
+  CameraAccess(this.category, {Key key, this.title}) : super(key: key);
   @override
   _CameraAccessState createState() => _CameraAccessState();
 }
 
 class _CameraAccessState extends State<CameraAccess> {
-  @override
-  void initState() {
-    super.initState();
-  }
-
   @override
   Widget build(BuildContext context) {
-
     return Scaffold(
       appBar: AppBar(
         title: Text("KatApp"),
@@ -49,12 +44,11 @@ class _CameraAccessState extends State<CameraAccess> {
                   height: 250,
                   width: 250,
                   child: RaisedButton(
-                      child:
-                      Icon(Icons.photo_library, color: Colors.black, size: 35),
+                      child: Icon(Icons.photo_library,
+                          color: Colors.black, size: 35),
                       color: Colors.grey,
                       onPressed: null),
                 ),
-
                 SizedBox(
                   height: 50,
                 ),
@@ -62,18 +56,89 @@ class _CameraAccessState extends State<CameraAccess> {
                   height: 50,
                   width: 200,
                   child: RaisedButton(
-                    child: Text('Absenden',
-                        style: TextStyle(color: Colors.white, fontSize: 20)),
-                    color: Colors.red,
-                    onPressed: () {
-                      Navigator.push(
-                        context,
-                        MaterialPageRoute(
-                            builder: (context) =>
-                                LockScreen()),
-                      );
-                    },
-                  ),
+                      child: Text('Absenden',
+                          style: TextStyle(color: Colors.white, fontSize: 20)),
+                      color: Colors.red,
+                      onPressed: () {
+                        Category category = widget.category;
+                        if (category is CategoryT1A) {
+                          Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                builder: (context) => LockScreen(
+                                    categorygroup: "Kategorie T1A",
+                                    patientID: '1',
+                                    place:
+                                    'Hochschule Reutlingen \nAlteburgstraße 150 \n72762 Reutlingen',
+                                    dateTime: '15.07.2020/11:13'),
+                              ));
+                        } else if (category is CategoryT1B) {
+                          Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                  builder: (context) => LockScreen(
+                                      categorygroup: "Kategorie T1B",
+                                      patientID: '1',
+                                      place:
+                                      'Hochschule Reutlingen \nAlteburgstraße 150 \n72762 Reutlingen',
+                                      dateTime: '15.07.2020/11:13')));
+                        } else if (category is CategoryT1C) {
+                          Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                builder: (context) => LockScreen(
+                                    categorygroup: "Kategorie T1C",
+                                    patientID: '1',
+                                    place:
+                                    'Hochschule Reutlingen \nAlteburgstraße 150 \n72762 Reutlingen',
+                                    dateTime: '15.07.2020/11:13'),
+                              ));
+                        } else if (category is CategoryT1D) {
+                          Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                builder: (context) => LockScreen(
+                                    categorygroup: "Kategorie T1D",
+                                    patientID: '1',
+                                    place:
+                                    'Hochschule Reutlingen \nAlteburgstraße 150 \n72762 Reutlingen',
+                                    dateTime: '15.07.2020/11:13'),
+                              ));
+                        } else if (category is CategoryT2) {
+                          Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                builder: (context) => LockScreen(
+                                    categorygroup: "Kategorie T2",
+                                    patientID: '1',
+                                    place:
+                                    'Hochschule Reutlingen \nAlteburgstraße 150 \n72762 Reutlingen',
+                                    dateTime: '15.07.2020/11:13'),
+                              ));
+                        } else if (category is CategoryT3) {
+                          Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                builder: (context) => LockScreen(
+                                    categorygroup: "Kategorie T3",
+                                    patientID: '1',
+                                    place:
+                                    'Hochschule Reutlingen \nAlteburgstraße 150 \n72762 Reutlingen',
+                                    dateTime: '15.07.2020/11:13'),
+                              ));
+                        } else if (category is CategoryT4) {
+                          Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                builder: (context) => LockScreen(
+                                    categorygroup: "Kategorie T4",
+                                    patientID: '1',
+                                    place:
+                                    'Hochschule Reutlingen \nAlteburgstraße 150 \n72762 Reutlingen',
+                                    dateTime: '15.07.2020/11:13'),
+                              ));
+                        }
+                      }),
                 ),
                 SizedBox(
                   height: 20,
@@ -99,4 +164,4 @@ class _CameraAccessState extends State<CameraAccess> {
       ),
     );
   }
-}
+}
\ No newline at end of file
diff --git a/rescueapp/lib/start_triage_system/circulation.dart b/rescueapp/lib/start_triage_system/circulation.dart
index 15394d13e1f3cb1b64b56539d6112a143c4fb8d1..a6796d0bcc8a05e1267e7baeafb949e56fe4b4c1 100644
--- a/rescueapp/lib/start_triage_system/circulation.dart
+++ b/rescueapp/lib/start_triage_system/circulation.dart
@@ -1,14 +1,21 @@
 import 'package:flutter/material.dart';
+import 'camera_access.dart';
+import 'triage_data.dart';
 import 'neurology.dart';
 
 class CapillaryFillingTime extends StatefulWidget {
-  CapillaryFillingTime({Key key, this.title}) : super(key: key);
+  CapillaryFillingTime(bool isBreathingFrequencyPerMinute, {Key key, this.title}) : super(key: key);
   final String title;
+
   @override
   _CapillaryFillingTimeState createState() => _CapillaryFillingTimeState();
 }
 
 class _CapillaryFillingTimeState extends State<CapillaryFillingTime> {
+  Category2 get category2 => new Category2 (false, null);
+  CategoryT1C get categoryT1C => new CategoryT1C ();
+
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -130,7 +137,13 @@ class _CapillaryFillingTimeState extends State<CapillaryFillingTime> {
                                 fontWeight: FontWeight.w600,
                                 color: Colors.blue[900])),
                         color: Colors.blue,
-                        onPressed: null))),
+                        onPressed: () {
+                          Navigator.push(
+                            context,
+                            MaterialPageRoute(
+                                builder: (context) => CameraAccess(categoryT1C)),
+                          );
+                        }))),
             SizedBox(
               height: 10,
             ),
@@ -146,10 +159,13 @@ class _CapillaryFillingTimeState extends State<CapillaryFillingTime> {
                                 color: Colors.blue[900])),
                         color: Colors.blue,
                         onPressed: () {
+                          setState(() {
+                            category2.isCirculation = false;
+                          });
                           Navigator.push(
                             context,
                             MaterialPageRoute(
-                                builder: (context) => Neurology()),
+                                builder: (context) => Neurology(category2.isCirculation )),
                           );
                         }))),
             SizedBox(
diff --git a/rescueapp/lib/start_triage_system/lock_screen.dart b/rescueapp/lib/start_triage_system/lock_screen.dart
index 0d6c18afc24b0d4ccbeb4d99b2a8f61e5133b124..ed10fcb1c99d28827ef2343fc7044d2e0b07de96 100644
--- a/rescueapp/lib/start_triage_system/lock_screen.dart
+++ b/rescueapp/lib/start_triage_system/lock_screen.dart
@@ -1,17 +1,26 @@
 import 'package:flutter/material.dart';
 
+
 class LockScreen extends StatefulWidget {
-  LockScreen({Key key, this.title}) : super(key: key);
+
+  LockScreen(  {Key key, this.title, @required this.categorygroup, @required this.patientID,@required this.place,@required this.dateTime, }) : super(key: key);
   final String title;
+  final String categorygroup;
+  final String patientID;
+  final String place;
+  final String dateTime;
+
+
   @override
   _LockScreenState createState() => _LockScreenState();
 }
 
 class _LockScreenState extends State<LockScreen> {
+  final Color myColor = Colors.white;
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      backgroundColor: Colors.green,
+       backgroundColor: Colors.green,
       appBar: AppBar(
         title: Text('KatApp'),
       ),
@@ -22,8 +31,9 @@ class _LockScreenState extends State<LockScreen> {
             SizedBox(
                 height: 200,
                 child: Container(
+
                   alignment: Alignment.center,
-                  child: Text('Kategorie T3',
+                  child: Text(widget.categorygroup,
                       style: TextStyle(
                           fontSize: 50,
                           fontWeight: FontWeight.w900,
@@ -45,7 +55,7 @@ class _LockScreenState extends State<LockScreen> {
                 height: 40,
                 child: Container(
                   alignment: Alignment.centerLeft,
-                  child: Text('1',
+                  child: Text(widget.patientID,
                       style: TextStyle(
                         fontSize: 20,
                         color: Colors.blue[900],
@@ -66,7 +76,7 @@ class _LockScreenState extends State<LockScreen> {
                 height: 90,
                 child: Container(
                   alignment: Alignment.centerLeft,
-                  child: Text('Hochschule Reutlingen \nAlteburgstraße 150 \n72762 Reutlingen',
+                  child: Text(widget.place,
                       style: TextStyle(
                         fontSize: 20,
                         color: Colors.blue[900],
@@ -88,7 +98,7 @@ class _LockScreenState extends State<LockScreen> {
                 height: 50,
                 child: Container(
                   alignment: Alignment.centerLeft,
-                  child: Text('15.07.2020/11:13',
+                  child: Text(widget.dateTime,
                       style: TextStyle(
                         fontSize: 20,
                         color: Colors.blue[900],
diff --git a/rescueapp/lib/start_triage_system/neurology.dart b/rescueapp/lib/start_triage_system/neurology.dart
index 5a4aa1623f6c859db1083c05385f7fd2fbf1763d..1f08fcd6a7f7389993ca7b8ac7c0a2fcab7bd2ed 100644
--- a/rescueapp/lib/start_triage_system/neurology.dart
+++ b/rescueapp/lib/start_triage_system/neurology.dart
@@ -1,13 +1,18 @@
 import 'package:flutter/material.dart';
+import 'camera_access.dart';
+import 'triage_data.dart';
 
 class Neurology extends StatefulWidget {
-  Neurology({Key key, this.title}) : super(key: key);
+  Neurology(bool isCirculation, {Key key, this.title}) : super(key: key);
   final String title;
+
   @override
   _NeurologyState createState() => _NeurologyState();
 }
 
 class _NeurologyState extends State<Neurology> {
+  CategoryT2 get categoryT2 => new CategoryT2 (false);
+  CategoryT1D get categoryT1D => new CategoryT1D (false);
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -154,7 +159,16 @@ class _NeurologyState extends State<Neurology> {
                                 fontWeight: FontWeight.w600,
                                 color: Colors.blue[900])),
                         color: Colors.blue,
-                        onPressed: null))),
+                        onPressed: () {
+                          setState(() {
+                            categoryT1D.isNeurology = true;
+                          });
+                          Navigator.push(
+                            context,
+                            MaterialPageRoute(
+                                builder: (context) => CameraAccess(categoryT2)),
+                          );
+                        }))),
             SizedBox(
               height: 10,
             ),
@@ -169,7 +183,16 @@ class _NeurologyState extends State<Neurology> {
                                 fontWeight: FontWeight.w600,
                                 color: Colors.blue[900])),
                         color: Colors.blue,
-                        onPressed: null))),
+                        onPressed: () {
+                          setState(() {
+                            categoryT1D.isNeurology = false;
+                          });
+                          Navigator.push(
+                            context,
+                            MaterialPageRoute(
+                                builder: (context) => CameraAccess(categoryT1D)),
+                          );
+                        }))),
             SizedBox(
               height: 20,
             ),
diff --git a/rescueapp/lib/start_triage_system/spontaneous_breathing_present.dart b/rescueapp/lib/start_triage_system/spontaneous_breathing_present.dart
index 75b3fe827f7b16d98f1ad325f908b8bca849fc32..7d3afbe0f1dabf6d879fe0e11b6aaa006d76a0e2 100644
--- a/rescueapp/lib/start_triage_system/spontaneous_breathing_present.dart
+++ b/rescueapp/lib/start_triage_system/spontaneous_breathing_present.dart
@@ -1,10 +1,17 @@
 import 'package:flutter/material.dart';
+import 'triage_data.dart';
+
 import 'after_opening_airways.dart';
 import 'breathing_frequency_per_minute.dart';
 
 class SpontaneousBreathingPresent extends StatefulWidget {
-  SpontaneousBreathingPresent({Key key, this.title}) : super(key: key);
+  SpontaneousBreathingPresent(
+    bool isAmbulatory, {
+    Key key,
+    this.title,
+  }) : super(key: key);
   final String title;
+
   @override
   _SpontaneousBreathingPresentState createState() =>
       _SpontaneousBreathingPresentState();
@@ -12,6 +19,13 @@ class SpontaneousBreathingPresent extends StatefulWidget {
 
 class _SpontaneousBreathingPresentState
     extends State<SpontaneousBreathingPresent> {
+   Category get category => new Category(false, null);
+
+  @override
+  void initState() {
+    super.initState();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -96,12 +110,17 @@ class _SpontaneousBreathingPresentState
                                 color: Colors.blue[900])),
                         color: Colors.blue,
                         onPressed: () {
+                          setState(() {
+                            category.isSpontaneousBreathingPresent = true;
+                          });
                           Navigator.push(
                             context,
                             MaterialPageRoute(
-                                builder: (context) => BreathingFrequencyPerMinute()),
+                                builder: (context) =>
+                                    BreathingFrequencyPerMinute(category
+                                        .isSpontaneousBreathingPresent = true)),
                           );
-                        } ))),
+                        }))),
             SizedBox(
               height: 10,
             ),
@@ -120,7 +139,10 @@ class _SpontaneousBreathingPresentState
                           Navigator.push(
                             context,
                             MaterialPageRoute(
-                                builder: (context) => AfterOpeningAirways()),
+                                builder: (context) => AfterOpeningAirways(
+                                    category
+                                        .isSpontaneousBreathingPresent = false)),
+
                           );
                         }))),
             SizedBox(
diff --git a/rescueapp/lib/start_triage_system/triage_data.dart b/rescueapp/lib/start_triage_system/triage_data.dart
new file mode 100644
index 0000000000000000000000000000000000000000..77c135e3b9ed85b05b8e0ddc6543fa293ce28661
--- /dev/null
+++ b/rescueapp/lib/start_triage_system/triage_data.dart
@@ -0,0 +1,56 @@
+// Superclasses ----------------------------------------------------------------
+
+class Category {
+  bool isAmbulatory;
+  bool isSpontaneousBreathingPresent;
+
+  Category(this.isAmbulatory, this.isSpontaneousBreathingPresent);
+}
+
+class Category2 extends Category {
+  bool isBreathingFrequencyPerMinute;
+  bool isCirculation;
+
+  Category2(this.isBreathingFrequencyPerMinute, this.isCirculation)
+      : super(false, true);
+}
+
+// Subclasses ------------------------------------------------------------------
+
+class CategoryT1A extends Category {
+  bool isAfterOpeningAirways = true;
+
+  CategoryT1A(this.isAfterOpeningAirways) : super(false, false);
+}
+
+class CategoryT1B extends Category {
+  bool isBreathingFrequencyPerMinute = true;
+
+  CategoryT1B(
+      this.isBreathingFrequencyPerMinute,
+      ) : super(false, true);
+}
+
+class CategoryT1C extends Category2 {
+  CategoryT1C() : super(false, true);
+}
+
+class CategoryT1D extends Category2 {
+  bool isNeurology = false;
+  CategoryT1D(this.isNeurology) : super(false, false);
+}
+
+class CategoryT2 extends Category2 {
+  bool isNeurology = true;
+  CategoryT2(this.isNeurology) : super(false, false);
+}
+
+class CategoryT3 extends Category {
+  CategoryT3() : super(true, null);
+}
+
+class CategoryT4 extends Category {
+  bool isAfterOpeningAirways = false;
+
+  CategoryT4(this.isAfterOpeningAirways) : super(false, false);
+}