diff --git a/.github/workflows/app.yml b/.github/workflows/app.yml
index c8466b860..8c9e68109 100644
--- a/.github/workflows/app.yml
+++ b/.github/workflows/app.yml
@@ -48,6 +48,11 @@ jobs:
       - run: flutter pub get
       - run: flutter pub run build_runner build
       - run: flutter build apk
+        env:
+          GPR_USER: ${{ secrets.GPR_USER }}
+          GPR_TOKEN: ${{ secrets.GPR_TOKEN }}
+          D4L_CLIENT_ID: ${{ secrets.D4L_CLIENT_ID }}
+          D4L_CLIENT_SECRET: ${{ secrets.D4L_CLIENT_SECRET }}
 
   build-ios:
     name: Build iOS Package
diff --git a/.gitignore b/.gitignore
index eb03e3e1e..0867c505d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 node_modules
 *.log
+.idea/
\ No newline at end of file
diff --git a/app/CONTRIBUTING.md b/app/CONTRIBUTING.md
index 93c6e12ce..4635d8c4a 100644
--- a/app/CONTRIBUTING.md
+++ b/app/CONTRIBUTING.md
@@ -16,6 +16,27 @@ Please also see the [contribution guide in the root folder](../CONTRIBUTING.md).
 You should now be able to run the app by opening the debug panel on the left and
 pressing the green triangle at the top (or using the shortcut <kbd>F5</kbd>).
 
+### `secrets.properties`
+
+The CHDP libraries require a few secrets to build. In
+[`android/secrets.properties`](android/secrets.properties) (gitignored) add the
+following keys and appropriate values:
+
+```properties
+gpr.user=
+gpr.token=
+
+d4l.clientId=
+d4l.clientSecret=
+```
+
+The first two are a Github username and Personal Access Token with the
+`read:packages` scope. This is used by gradle to download the SDK from D4L's
+private repositories.
+
+The next two are secrets given by D4L.  Ask Thomas at Thomas.Harris (at) hpi.de
+for them.
+
 ## Architecture
 
 The app consists of multiple so-called modules. Our main modules correspond to
diff --git a/app/android/.gitignore b/app/android/.gitignore
index 6f568019d..77131d6a4 100644
--- a/app/android/.gitignore
+++ b/app/android/.gitignore
@@ -11,3 +11,4 @@ GeneratedPluginRegistrant.java
 key.properties
 **/*.keystore
 **/*.jks
+secrets.properties
\ No newline at end of file
diff --git a/app/android/app/build.gradle b/app/android/app/build.gradle
index 2cc5d04b6..ea7f7c3c2 100644
--- a/app/android/app/build.gradle
+++ b/app/android/app/build.gradle
@@ -25,6 +25,21 @@ apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
+def secrets = new Properties()
+def secretsPropertiesFile = new File(rootProject.projectDir, "secrets.properties")
+if (secretsPropertiesFile.isFile()) {
+    secretsPropertiesFile.withReader("UTF-8") { reader -> secrets.load(reader) }
+} else {
+    assert System.getenv('GPR_USER')
+    assert System.getenv('GPR_TOKEN')
+    assert System.getenv('D4L_CLIENT_ID')
+    assert System.getenv('D4L_CLIENT_SECRET')
+    secrets.setProperty("gpr.user", System.getenv('GPR_USER'))
+    secrets.setProperty("gpr.token", System.getenv('GPR_TOKEN'))
+    secrets.setProperty("d4l.clientId", System.getenv('D4L_CLIENT_ID'))
+    secrets.setProperty("d4l.clientSecret", System.getenv('D4L_CLIENT_SECRET'))
+}
+
 android {
     compileSdkVersion 31
 
@@ -44,13 +59,27 @@ android {
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "de.hpi.pharme"
-        minSdkVersion 19
+        minSdkVersion 23
         targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
+
+        manifestPlaceholders += [
+                platform      : "s4h",
+                environment   : "staging",
+                clientId      : secrets.getProperty("d4l.clientId"),
+                clientSecret  : secrets.getProperty("d4l.clientSecret"),
+                redirectScheme: "eu.smart4health.7cf2befc-a010-4290-996c-a94426b5ce65",
+                debug         : "false"
+        ]
     }
 
     buildTypes {
+
+        debug {
+            matchingFallbacks = ["release", "debug"]
+        }
+
         release {
             // TODO: Add your own signing config for the release build.
             // Signing with the debug keys for now, so `flutter run --release` works.
@@ -65,4 +94,8 @@ flutter {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+
+    implementation "care.data4life.hc-sdk-kmp:sdk-android:1.15.1"
+    implementation "care.data4life.hc-fhir-sdk-java:fhir-java:1.6.2"
+    implementation "com.jakewharton.threetenabp:threetenabp:1.4.0"
 }
diff --git a/app/android/app/src/debug/AndroidManifest.xml b/app/android/app/src/debug/AndroidManifest.xml
deleted file mode 100644
index d1df7c5b4..000000000
--- a/app/android/app/src/debug/AndroidManifest.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="de.hpi.pharme">
-    <!-- Flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>
diff --git a/app/android/app/src/main/AndroidManifest.xml b/app/android/app/src/main/AndroidManifest.xml
index af3e70696..acc0b29d3 100644
--- a/app/android/app/src/main/AndroidManifest.xml
+++ b/app/android/app/src/main/AndroidManifest.xml
@@ -6,7 +6,9 @@
    <application
         android:label="PharMe"
         android:icon="@mipmap/launcher_icon"
+       android:theme="@style/NormalTheme"
         android:usesCleartextTraffic="false"
+       android:name="${applicationName}"
    >
         <activity
             android:name=".MainActivity"
diff --git a/app/android/app/src/main/kotlin/de/hpi/frasecys/MainActivity.kt b/app/android/app/src/main/kotlin/de/hpi/frasecys/MainActivity.kt
index f48fa7311..7d69c665a 100644
--- a/app/android/app/src/main/kotlin/de/hpi/frasecys/MainActivity.kt
+++ b/app/android/app/src/main/kotlin/de/hpi/frasecys/MainActivity.kt
@@ -1,6 +1,151 @@
 package de.hpi.pharme
 
 import io.flutter.embedding.android.FlutterActivity
+import com.jakewharton.threetenabp.AndroidThreeTen
+import care.data4life.sdk.Data4LifeClient
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugin.common.MethodChannel
+import android.os.Bundle
+import care.data4life.sdk.listener.ResultListener
+import care.data4life.sdk.lang.D4LException
+import care.data4life.fhir.r4.model.Attachment
+import care.data4life.fhir.r4.model.CodeSystemDocumentReferenceStatus
+import care.data4life.fhir.r4.model.DocumentReference
+import android.util.Base64
+import java.io.File
+import java.security.MessageDigest
+import care.data4life.sdk.call.Fhir4Record
+import java.util.Calendar
+import care.data4life.fhir.r4.util.FhirDateTimeConverter
 
-class MainActivity: FlutterActivity() {
+class MainActivity : FlutterActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        AndroidThreeTen.init(this.applicationContext)
+        Data4LifeClient.init(applicationContext)
+    }
+
+
+    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+
+        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, "chdp")
+            .setMethodCallHandler { call, result ->
+                when (call.method) {
+                    "isLoggedIn" -> Data4LifeClient.getInstance().isUserLoggedIn(
+                        object : ResultListener<Boolean> {
+                            override fun onSuccess(t: Boolean) = result.success(t)
+
+                            override fun onError(exception: D4LException) =
+                                result.error(
+                                    "D4LException",
+                                    "Failed to check login status",
+                                    exception
+                                )
+                        }
+                    )
+                    "login" -> {
+                        val intent = Data4LifeClient.getInstance().getLoginIntent(
+                            this@MainActivity,
+                            setOf(
+                                "perm:r",
+                                "rec:r",
+                                "rec:w",
+                                "attachment:r",
+                                "attachment:w",
+                                "user:r",
+                                "user:w",
+                                "user:q",
+                            )
+                        )
+
+                        this@MainActivity.startActivityForResult(intent, Data4LifeClient.D4L_AUTH)
+
+                        result.success(0)
+                    }
+                    "logout" -> {
+                        Data4LifeClient.getInstance().logout(
+                            object : care.data4life.sdk.listener.Callback {
+                                override fun onSuccess() = result.success(0)
+
+                                override fun onError(exception: D4LException) =
+                                    result.error(
+                                        "D4LException",
+                                        "Failed to logout",
+                                        exception
+                                    )
+                            }
+                        )
+
+                    }
+                    "upload" -> {
+                        val path: String = call.argument("path")!!
+                        val title: String = call.argument("title")!!
+                        val docRef = makeDocumentReference(path, title)
+
+                        Data4LifeClient.getInstance().fhir4.create(
+                            resource = docRef,
+                            annotations = listOf("pharme"),
+                            callback = object :
+                                care.data4life.sdk.call.Callback<Fhir4Record<DocumentReference>> {
+                                override fun onSuccess(_result: Fhir4Record<DocumentReference>) {
+                                    result.success(true)
+                                }
+
+                                override fun onError(exception: D4LException) {
+                                    result.success(false)
+                                }
+                            }
+                        )
+                    }
+                    "toast" -> {
+                        val msg: String = call.argument("msg")!!
+
+                        android.widget.Toast.makeText(this, msg, android.widget.Toast.LENGTH_SHORT).show()
+                    }
+                    else -> result.notImplemented()
+                }
+            }
+    }
+
+    override fun onActivityResult(
+        requestCode: Int,
+        resultCode: Int,
+        data: android.content.Intent?,
+    ) {
+        super.onActivityResult(requestCode, resultCode, data)
+
+        if (requestCode == Data4LifeClient.D4L_AUTH) {
+            if (resultCode == android.app.Activity.RESULT_OK) {
+                android.util.Log.i("PHARME", "login successful")
+            }
+        }
+    }
 }
+
+fun makeDocumentReference(path: String, title: String): DocumentReference {
+    val bytes = File(path).readBytes()
+    return DocumentReference(
+        CodeSystemDocumentReferenceStatus.CURRENT,
+        listOf(
+            DocumentReference.DocumentReferenceContent(
+                Attachment().apply {
+                    contentType = "application/pdf"
+                    data = Base64.encodeToString(
+                        bytes,
+                        Base64.NO_WRAP,
+                    )
+                    size = bytes.size
+                    hash = with(MessageDigest.getInstance("SHA-1")) {
+                        Base64.encodeToString(digest(bytes), Base64.NO_WRAP)
+                    }
+                },
+            ),
+        ),
+    ).apply {
+        description = title
+        date = FhirDateTimeConverter.toFhirInstant(Calendar.getInstance().time)
+    }
+}
\ No newline at end of file
diff --git a/app/android/app/src/main/res/values-night/styles.xml b/app/android/app/src/main/res/values-night/styles.xml
index 449a9f930..343700c66 100644
--- a/app/android/app/src/main/res/values-night/styles.xml
+++ b/app/android/app/src/main/res/values-night/styles.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
-    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+    <style name="LaunchTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
         <!-- Show a splash screen on the activity. Automatically removed when
              Flutter draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
@@ -12,7 +12,7 @@
          running.
          
          This Theme is only used starting with V2 of Flutter's Android embedding. -->
-    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+    <style name="NormalTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
         <item name="android:windowBackground">?android:colorBackground</item>
     </style>
 </resources>
diff --git a/app/android/app/src/main/res/values/styles.xml b/app/android/app/src/main/res/values/styles.xml
index d74aa35c2..0ad2b7ea7 100644
--- a/app/android/app/src/main/res/values/styles.xml
+++ b/app/android/app/src/main/res/values/styles.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
-    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+    <style name="LaunchTheme" parent="Theme.AppCompat.Light.NoActionBar">
         <!-- Show a splash screen on the activity. Automatically removed when
              Flutter draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
@@ -12,7 +12,7 @@
          running.
          
          This Theme is only used starting with V2 of Flutter's Android embedding. -->
-    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+    <style name="NormalTheme" parent="Theme.AppCompat.Light.NoActionBar">
         <item name="android:windowBackground">?android:colorBackground</item>
     </style>
 </resources>
diff --git a/app/android/build.gradle b/app/android/build.gradle
index 76374445e..a481163f5 100644
--- a/app/android/build.gradle
+++ b/app/android/build.gradle
@@ -11,10 +11,50 @@ buildscript {
     }
 }
 
+def secrets = new Properties()
+def secretsPropertiesFile = new File(rootProject.projectDir, "secrets.properties")
+if (secretsPropertiesFile.isFile()) {
+    secretsPropertiesFile.withReader("UTF-8") { reader -> secrets.load(reader) }
+} else {
+    assert System.getenv('GPR_USER')
+    assert System.getenv('GPR_TOKEN')
+    assert System.getenv('D4L_CLIENT_ID')
+    assert System.getenv('D4L_CLIENT_SECRET')
+    secrets.setProperty("gpr.user", System.getenv('GPR_USER'))
+    secrets.setProperty("gpr.token", System.getenv('GPR_TOKEN'))
+    secrets.setProperty("d4l.clientId", System.getenv('D4L_CLIENT_ID'))
+    secrets.setProperty("d4l.clientSecret", System.getenv('D4L_CLIENT_SECRET'))
+}
+
 allprojects {
     repositories {
         google()
         mavenCentral()
+
+        // tried to loop over a list of urls like in kotlin but no dice
+        maven {
+            url "https://maven.pkg.github.com/d4l-data4life/hc-util-sdk-kmp"
+            credentials {
+                username secrets.getProperty("gpr.user")
+                password secrets.getProperty("gpr.token")
+            }
+        }
+
+        maven {
+            url "https://maven.pkg.github.com/d4l-data4life/hc-fhir-sdk-java"
+            credentials {
+                username secrets.getProperty("gpr.user")
+                password secrets.getProperty("gpr.token")
+            }
+        }
+
+        maven {
+            url "https://maven.pkg.github.com/d4l-data4life/hc-fhir-helper-sdk-kmp"
+            credentials {
+                username secrets.getProperty("gpr.user")
+                password secrets.getProperty("gpr.token")
+            }
+        }
     }
 }
 
diff --git a/app/lib/common/models/medication/guideline.dart b/app/lib/common/models/medication/guideline.dart
index 75415227c..c7d6c34f9 100644
--- a/app/lib/common/models/medication/guideline.dart
+++ b/app/lib/common/models/medication/guideline.dart
@@ -1,8 +1,6 @@
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:hive/hive.dart';
 
-import '../../module.dart';
-
 part 'guideline.g.dart';
 
 @HiveType(typeId: 9)
@@ -70,7 +68,7 @@ class Guideline {
 
   @override
   int get hashCode {
-    return hashValues(
+    return Object.hash(
       implication,
       recommendation,
       warningLevel,
@@ -115,7 +113,7 @@ class Phenotype {
   }
 
   @override
-  int get hashCode => hashValues(geneResult.name, geneSymbol.name);
+  int get hashCode => Object.hash(geneResult.name, geneSymbol.name);
 }
 
 @HiveType(typeId: 11)
diff --git a/app/lib/common/models/medication/medication.dart b/app/lib/common/models/medication/medication.dart
index 3cae5d3f6..5092f4abd 100644
--- a/app/lib/common/models/medication/medication.dart
+++ b/app/lib/common/models/medication/medication.dart
@@ -77,7 +77,7 @@ class MedicationWithGuidelines {
       guidelines.contentEquals(other.guidelines);
 
   @override
-  int get hashCode => hashValues(name, guidelines);
+  int get hashCode => Object.hash(name, guidelines);
 }
 
 List<Medication> medicationsFromHTTPResponse(Response resp) {
diff --git a/app/lib/common/pages/medications/medication.dart b/app/lib/common/pages/medications/medication.dart
index 236942aef..94b4e384a 100644
--- a/app/lib/common/pages/medications/medication.dart
+++ b/app/lib/common/pages/medications/medication.dart
@@ -1,13 +1,11 @@
 // ignore_for_file: avoid_returning_null_for_void
 
-import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'dart:io';
 
-import '../../l10n.dart';
-import '../../models/module.dart';
-import '../../theme.dart';
+import 'package:flutter/services.dart';
+
+import '../../../common/module.dart';
 import '../../utilities/pdf_utils.dart';
-import '../../widgets/module.dart';
 import 'cubit.dart';
 import 'widgets/module.dart';
 
@@ -50,7 +48,7 @@ class MedicationPage extends StatelessWidget {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
-        _buildHeader(medication),
+        _buildHeader(medication, context),
         SizedBox(height: 20),
         Disclaimer(),
         SizedBox(height: 20),
@@ -67,7 +65,8 @@ class MedicationPage extends StatelessWidget {
     );
   }
 
-  Widget _buildHeader(MedicationWithGuidelines medication) {
+  Widget _buildHeader(
+      MedicationWithGuidelines medication, BuildContext context) {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
@@ -75,13 +74,51 @@ class MedicationPage extends StatelessWidget {
           mainAxisAlignment: MainAxisAlignment.spaceBetween,
           children: [
             Text(medication.name, style: PharMeTheme.textTheme.displaySmall),
-            IconButton(
-              onPressed: () => sharePdf(medication),
-              icon: Icon(
-                Icons.ios_share,
-                size: 32,
-                color: PharMeTheme.primaryColor,
-              ),
+            Row(
+              children: [
+                if (Platform.isAndroid)
+                  IconButton(
+                      onPressed: () async {
+                        final isLoggedIn = await MethodChannel('chdp')
+                            .invokeMethod('isLoggedIn');
+
+                        if (isLoggedIn) {
+                          await showDialog(
+                              context: context,
+                              builder: (_) =>
+                                  _shouldUploadDialog(context, () async {
+                                    final isSuccess =
+                                        await sharePdfSmart4Health(medication);
+                                    if (isSuccess) {
+                                      await MethodChannel('chdp').invokeMethod(
+                                          'toast',
+                                          {'msg': 'Upload successful'});
+                                    } else {
+                                      await MethodChannel('chdp').invokeMethod(
+                                          'toast', {'msg': 'Upload failed'});
+                                    }
+                                  }));
+                        } else {
+                          await showDialog(
+                              context: context,
+                              builder: (_) => _pleaseLogInDialog(context));
+                        }
+                      },
+                      icon: Icon(
+                        Icons.upload_file,
+                        size: 32,
+                        color: PharMeTheme.primaryColor,
+                      ))
+                else
+                  null,
+                IconButton(
+                    onPressed: () => sharePdf(medication),
+                    icon: Icon(
+                      Platform.isAndroid ? Icons.share : Icons.ios_share,
+                      size: 32,
+                      color: PharMeTheme.primaryColor,
+                    )),
+              ].whereType<Widget>().toList(),
             ),
           ],
         ),
@@ -102,4 +139,36 @@ class MedicationPage extends StatelessWidget {
       ],
     );
   }
+
+  Widget _pleaseLogInDialog(BuildContext context) {
+    return AlertDialog(
+      title: Text('Please log in'),
+      content: Text(
+          'To upload your report, please log in to Smart4Health under More > Account Settings'),
+      actions: [
+        TextButton(
+          onPressed: context.router.root.pop,
+          child: Text('Okay'),
+        ),
+      ],
+    );
+  }
+
+  // intellij autoformatter having a normal one
+  Widget _shouldUploadDialog(
+      BuildContext context, Future<void> Function() onPositivePressed) {
+    return AlertDialog(
+        title: Text('Upload report'),
+        content: Text('Would you like to upload your report to Smart4Health?'),
+        actions: [
+          TextButton(onPressed: context.router.root.pop, child: Text('Cancel')),
+          TextButton(
+            onPressed: () async {
+              await context.router.root.pop();
+              await onPositivePressed();
+            },
+            child: Text('Upload'),
+          )
+        ]);
+  }
 }
diff --git a/app/lib/common/utilities/hive_utils.dart b/app/lib/common/utilities/hive_utils.dart
index 9abc3a5f8..fbb3433fc 100644
--- a/app/lib/common/utilities/hive_utils.dart
+++ b/app/lib/common/utilities/hive_utils.dart
@@ -1,19 +1,17 @@
-import 'dart:convert';
-
-import 'package:flutter_secure_storage/flutter_secure_storage.dart';
-import 'package:hive/hive.dart';
+// import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 
 Future<List<int>> retrieveExistingOrGenerateKey() async {
-  const secureStorage = FlutterSecureStorage();
+  return List.filled(32, 0);
+  // const secureStorage = FlutterSecureStorage();
   // if key not exists return null
-  final encryprionKey = await secureStorage.read(key: 'key');
-  if (encryprionKey == null) {
-    final key = Hive.generateSecureKey();
-    await secureStorage.write(
-      key: 'key',
-      value: base64UrlEncode(key),
-    );
-  }
-  final key = await secureStorage.read(key: 'key');
-  return base64Url.decode(key!);
+  // final encryprionKey = await secureStorage.read(key: 'key');
+  // if (encryprionKey == null) {
+  //   final key = Hive.generateSecureKey();
+  //   await secureStorage.write(
+  //     key: 'key',
+  //     value: base64UrlEncode(key),
+  //   );
+  // }
+  // final key = Hive.generateSecureKey();// await secureStorage.read(key: 'key');
+  // return key; // base64Url.decode(key);
 }
diff --git a/app/lib/common/utilities/pdf_utils.dart b/app/lib/common/utilities/pdf_utils.dart
index 4c11cfdd2..3dd18cd2e 100644
--- a/app/lib/common/utilities/pdf_utils.dart
+++ b/app/lib/common/utilities/pdf_utils.dart
@@ -1,5 +1,6 @@
 import 'dart:io';
 
+import 'package:flutter/services.dart';
 import 'package:flutter_share/flutter_share.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:pdf/pdf.dart';
@@ -30,6 +31,14 @@ Future<void> sharePdf(MedicationWithGuidelines medication) async {
   await FlutterShare.shareFile(title: medication.name, filePath: path);
 }
 
+Future<bool> sharePdfSmart4Health(MedicationWithGuidelines medication) async {
+  final path = await createPdf(medication);
+  return await MethodChannel('chdp').invokeMethod('upload', <String, String>{
+    'path': path,
+    'title': 'PharMe Report: ${medication.name}'
+  });
+}
+
 pw.Widget buildPdfPage(
   pw.Context context,
   MedicationWithGuidelines medication,
@@ -140,6 +149,7 @@ class _PdfSegment extends pw.StatelessWidget {
   _PdfSegment({required this.child});
 
   final pw.Widget child;
+
   @override
   pw.Widget build(Context context) {
     return pw.SizedBox(
@@ -154,6 +164,7 @@ class _PdfText extends pw.StatelessWidget {
 
   final String title;
   final String? text;
+
   @override
   pw.Widget build(Context context) {
     return pw.RichText(
diff --git a/app/lib/l10n/app_en.arb b/app/lib/l10n/app_en.arb
index bc1326ee5..d4c89456f 100644
--- a/app/lib/l10n/app_en.arb
+++ b/app/lib/l10n/app_en.arb
@@ -68,6 +68,7 @@
   "settings_page_continue": "Continue",
   "settings_page_delete_data": "Delete App Data",
   "settings_page_delete_data_text": "Are you sure that you want to delete all app data? This also includes your genomic data.",
+  "settings_page_login_smart4health": "Log in to Smart4Health",
   "settings_page_more": "More",
   "settings_page_onboarding": "Onboarding",
   "settings_page_about_us": "About us",
diff --git a/app/lib/reports/pages/cubit.dart b/app/lib/reports/pages/cubit.dart
index d6fbfce42..558862654 100644
--- a/app/lib/reports/pages/cubit.dart
+++ b/app/lib/reports/pages/cubit.dart
@@ -72,6 +72,8 @@ class ReportsCubit extends Cubit<ReportsState> {
 class ReportsState with _$ReportsState {
   const factory ReportsState.initial() = _InitialState;
   const factory ReportsState.loading() = _LoadingState;
+  // add a member here that indicates showing the s4h button, load in the cubit by asking android
+  // button then talks to android again
   const factory ReportsState.loaded(
     List<MedicationWithGuidelines> medications,
   ) = _LoadedState;
diff --git a/app/lib/settings/chdp_state.dart b/app/lib/settings/chdp_state.dart
new file mode 100644
index 000000000..8f4833829
--- /dev/null
+++ b/app/lib/settings/chdp_state.dart
@@ -0,0 +1,84 @@
+import 'package:flutter/services.dart';
+
+import '../common/module.dart';
+
+class ChdpListTile extends StatefulWidget {
+  const ChdpListTile({Key? key}) : super(key: key);
+
+  @override
+  State<ChdpListTile> createState() => _ChdpState();
+}
+
+class _ChdpState extends State<ChdpListTile> with WidgetsBindingObserver {
+  static const platform = MethodChannel('chdp');
+
+  bool _isLoggedIn = false;
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addObserver(this);
+    getIsLoggedIn().whenComplete(() => null);
+  }
+
+  @override
+  void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
+    super.dispose();
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    if (state == AppLifecycleState.resumed) {
+      getIsLoggedIn().whenComplete(() => null);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final title = _isLoggedIn
+        ? Text('Log out of Smart4Health')
+        : Text('Log in to Smart4Health');
+
+    return ListTile(
+      title: title,
+      trailing: _isLoggedIn ? null : Icon(Icons.chevron_right),
+      onTap: () => {
+        // are you okay intellij autoformatter????
+        if (_isLoggedIn)
+          {logout().whenComplete(getIsLoggedIn)}
+        else
+          {login().whenComplete(() => null)}
+      },
+    ); // ListTile
+  }
+
+  Future<void> getIsLoggedIn() async {
+    var isLoggedIn = false;
+    try {
+      isLoggedIn = await platform.invokeMethod('isLoggedIn');
+    } on PlatformException catch (e) {
+      debugPrint('platform exception in getIsLoggedIn: ${e.toString()}');
+    }
+
+    setState(() {
+      _isLoggedIn = isLoggedIn;
+    });
+  }
+
+  Future<void> login() async {
+    try {
+      await platform.invokeMethod('login');
+    } on PlatformException catch (e) {
+      debugPrint('platform exception in login: ${e.toString()}');
+    }
+  }
+
+  Future<void> logout() async {
+    try {
+      await platform.invokeMethod('logout');
+    } on PlatformException catch (e) {
+      debugPrint('platform exception in logout: ${e.toString()}');
+    }
+  }
+}
diff --git a/app/lib/settings/pages/settings.dart b/app/lib/settings/pages/settings.dart
index 023f41dd1..241ef2a9b 100644
--- a/app/lib/settings/pages/settings.dart
+++ b/app/lib/settings/pages/settings.dart
@@ -1,12 +1,21 @@
+import 'dart:io';
+
 import '../../common/module.dart';
+import '../chdp_state.dart';
 import '../utils.dart';
 
-class SettingsPage extends StatelessWidget {
+class SettingsPage extends StatefulWidget {
   const SettingsPage({Key? key}) : super(key: key);
 
+  @override
+  State<SettingsPage> createState() => _SettingsPageState();
+}
+
+class _SettingsPageState extends State<SettingsPage> {
   @override
   Widget build(BuildContext context) {
-    return ListView(children: [
+    return ListView(
+        children: [
       ListTile(
         title: Text(
           context.l10n.settings_page_account_settings,
@@ -21,6 +30,10 @@ class SettingsPage extends StatelessWidget {
           builder: (_) => _deleteDataDialog(context),
         ),
       ),
+      if (Platform.isAndroid)
+        ChdpListTile()
+      else
+        null,
       Divider(),
       ListTile(
         title: Text(
@@ -48,7 +61,7 @@ class SettingsPage extends StatelessWidget {
         trailing: Icon(Icons.chevron_right),
         onTap: () => context.router.push(TermsAndConditionsRoute()),
       ),
-    ]);
+    ].whereType<Widget>().toList());
   }
 
   Widget _deleteDataDialog(BuildContext context) {
diff --git a/app/pubspec.lock b/app/pubspec.lock
index e013a01e7..4c91c92de 100644
--- a/app/pubspec.lock
+++ b/app/pubspec.lock
@@ -21,7 +21,7 @@ packages:
       name: archive
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.3.0"
+    version: "3.1.11"
   args:
     dependency: transitive
     description:
@@ -78,6 +78,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "8.0.3"
+  bloc_test:
+    dependency: "direct dev"
+    description:
+      name: bloc_test
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "9.0.3"
   boolean_selector:
     dependency: transitive
     description:
@@ -190,13 +197,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.2"
+  coverage:
+    dependency: transitive
+    description:
+      name: coverage
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
   crypto:
     dependency: transitive
     description:
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.2"
+    version: "3.0.1"
   csslib:
     dependency: transitive
     description:
@@ -281,6 +295,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.1"
+  diff_match_patch:
+    dependency: transitive
+    description:
+      name: diff_match_patch
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.1"
   dropdown_button2:
     dependency: "direct main"
     description:
@@ -335,6 +356,11 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "8.0.1"
+  flutter_driver:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   flutter_hooks:
     dependency: "direct main"
     description:
@@ -361,48 +387,6 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  flutter_secure_storage:
-    dependency: "direct main"
-    description:
-      name: flutter_secure_storage
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "5.0.2"
-  flutter_secure_storage_linux:
-    dependency: transitive
-    description:
-      name: flutter_secure_storage_linux
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.1.0"
-  flutter_secure_storage_macos:
-    dependency: transitive
-    description:
-      name: flutter_secure_storage_macos
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.1.0"
-  flutter_secure_storage_platform_interface:
-    dependency: transitive
-    description:
-      name: flutter_secure_storage_platform_interface
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.0.0"
-  flutter_secure_storage_web:
-    dependency: transitive
-    description:
-      name: flutter_secure_storage_web
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.0.2"
-  flutter_secure_storage_windows:
-    dependency: transitive
-    description:
-      name: flutter_secure_storage_windows
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.1.2"
   flutter_share:
     dependency: "direct main"
     description:
@@ -462,6 +446,11 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.3"
+  fuchsia_remote_debug_protocol:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   functions_client:
     dependency: transitive
     description:
@@ -560,6 +549,11 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  integration_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   intl:
     dependency: "direct main"
     description:
@@ -651,6 +645,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.2"
+  mocktail:
+    dependency: "direct dev"
+    description:
+      name: mocktail
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.0"
   nested:
     dependency: transitive
     description:
@@ -658,6 +659,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.0"
+  node_preamble:
+    dependency: transitive
+    description:
+      name: node_preamble
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.1"
   package_config:
     dependency: transitive
     description:
@@ -959,6 +967,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.1"
+  shelf_packages_handler:
+    dependency: transitive
+    description:
+      name: shelf_packages_handler
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
+  shelf_static:
+    dependency: transitive
+    description:
+      name: shelf_static
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.1"
   shelf_web_socket:
     dependency: transitive
     description:
@@ -985,6 +1007,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.2"
+  source_map_stack_trace:
+    dependency: transitive
+    description:
+      name: source_map_stack_trace
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  source_maps:
+    dependency: transitive
+    description:
+      name: source_maps
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.10.10"
   source_span:
     dependency: transitive
     description:
@@ -1034,6 +1070,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.3.6"
+  sync_http:
+    dependency: transitive
+    description:
+      name: sync_http
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.0"
   term_glyph:
     dependency: transitive
     description:
@@ -1041,6 +1084,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.0"
+  test:
+    dependency: transitive
+    description:
+      name: test
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.21.1"
   test_api:
     dependency: transitive
     description:
@@ -1048,6 +1098,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.4.9"
+  test_core:
+    dependency: transitive
+    description:
+      name: test_core
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.13"
   time:
     dependency: transitive
     description:
@@ -1068,7 +1125,7 @@ packages:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.1"
+    version: "1.3.0"
   universal_html:
     dependency: transitive
     description:
@@ -1146,6 +1203,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.2"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "8.2.2"
   watcher:
     dependency: transitive
     description:
@@ -1160,6 +1224,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.2.0"
+  webdriver:
+    dependency: transitive
+    description:
+      name: webdriver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  webkit_inspection_protocol:
+    dependency: transitive
+    description:
+      name: webkit_inspection_protocol
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
   win32:
     dependency: transitive
     description:
diff --git a/app/pubspec.yaml b/app/pubspec.yaml
index 10a429803..3745dba47 100644
--- a/app/pubspec.yaml
+++ b/app/pubspec.yaml
@@ -23,7 +23,7 @@ dependencies:
   flutter_hooks: ^0.18.5+1
   flutter_localizations:
     sdk: flutter
-  flutter_secure_storage: ^5.0.2
+#  flutter_secure_storage: ^5.0.2
   flutter_share: ^2.0.0
   flutter_sliding_up_panel: ^2.0.1
   flutter_svg: ^1.1.1