diff --git a/app/build.gradle b/app/build.gradle
index 873dd60d..4fc78676 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -155,6 +155,7 @@ android {
     buildFeatures {
         compose true
         buildConfig true
+        aidl true
     }
 
     packagingOptions {
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 7316f255..37f25408 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -30,10 +30,22 @@
         android:usesCleartextTraffic="true"
         android:windowSoftInputMode="adjustResize"
         tools:targetApi="33">
+        <service
+            android:name=".nostr_nip55_signer"
+            android:enabled="true"
+            android:exported="true"
+            >
+
+        <intent-filter>
+            <action android:name="nostr_nip55_signer" />
+        </intent-filter>
+
+        </service>
+
         <receiver
             android:name=".service.KillSwitchReceiver"
             android:enabled="true"
-            android:exported="false"></receiver>
+            android:exported="false" />
         <receiver
             android:name=".service.ReconnectReceiver"
             android:enabled="true"
diff --git a/app/src/main/aidl/com/greenart7c3/nostrsigner/INostrSigner.aidl b/app/src/main/aidl/com/greenart7c3/nostrsigner/INostrSigner.aidl
new file mode 100644
index 00000000..db15c899
--- /dev/null
+++ b/app/src/main/aidl/com/greenart7c3/nostrsigner/INostrSigner.aidl
@@ -0,0 +1,11 @@
+// INostrSigner.aidl
+package com.greenart7c3.nostrsigner;
+
+// Declare any non-default types here with import statements
+
+interface INostrSigner {
+    String getPublicKey();
+    String signEvent(String unsigned_event);
+    String nip44Encrypt(String current_user_public_key, String public_key, String plaintext);
+    String nip44Decrypt(String current_user_public_key, String public_key, String ciphertext);
+}
diff --git a/app/src/main/java/com/greenart7c3/nostrsigner/Amber.kt b/app/src/main/java/com/greenart7c3/nostrsigner/Amber.kt
index 464a0c7a..3bdfab11 100644
--- a/app/src/main/java/com/greenart7c3/nostrsigner/Amber.kt
+++ b/app/src/main/java/com/greenart7c3/nostrsigner/Amber.kt
@@ -184,6 +184,7 @@ class Amber : Application(), LifecycleObserver {
 
     override fun onCreate() {
         super.onCreate()
+
         isStartingApp.value = true
 
         Log.d(TAG, "onCreate Amber")
@@ -233,29 +234,31 @@ class Amber : Application(), LifecycleObserver {
                     client.disconnect()
                 }
                 launch(Dispatchers.Main) {
-                    ProcessLifecycleOwner.get().lifecycle.addObserver(object : DefaultLifecycleObserver {
-                        override fun onStart(owner: LifecycleOwner) {
-                            Log.d("ProcessLifecycleOwner", "App in foreground")
-                            isAppInForeground = true
+                    ProcessLifecycleOwner.get().lifecycle.addObserver(
+                        object : DefaultLifecycleObserver {
+                            override fun onStart(owner: LifecycleOwner) {
+                                Log.d("ProcessLifecycleOwner", "App in foreground")
+                                isAppInForeground = true
 
-                            // activates the profile filter only when the app is in the foreground
-                            if (!settings.killSwitch.value) {
-                                applicationIOScope.launch {
-                                    profileSubscription.updateFilter()
+                                // activates the profile filter only when the app is in the foreground
+                                if (!settings.killSwitch.value) {
+                                    applicationIOScope.launch {
+                                        profileSubscription.updateFilter()
+                                    }
                                 }
                             }
-                        }
 
-                        override fun onStop(owner: LifecycleOwner) {
-                            Log.d("ProcessLifecycleOwner", "App in background")
-                            isAppInForeground = false
+                            override fun onStop(owner: LifecycleOwner) {
+                                Log.d("ProcessLifecycleOwner", "App in background")
+                                isAppInForeground = false
 
-                            // closes the filter when in the background
-                            applicationIOScope.launch {
-                                profileSubscription.closeSub()
+                                // closes the filter when in the background
+                                applicationIOScope.launch {
+                                    profileSubscription.closeSub()
+                                }
                             }
-                        }
-                    })
+                        },
+                    )
                 }
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to run migrations", e)
diff --git a/app/src/main/java/com/greenart7c3/nostrsigner/nostr_nip55_signer.kt b/app/src/main/java/com/greenart7c3/nostrsigner/nostr_nip55_signer.kt
new file mode 100644
index 00000000..ef051baa
--- /dev/null
+++ b/app/src/main/java/com/greenart7c3/nostrsigner/nostr_nip55_signer.kt
@@ -0,0 +1,44 @@
+package com.greenart7c3.nostrsigner
+
+import android.app.Service
+import android.content.Intent
+import android.os.IBinder
+import android.util.Log
+
+@Suppress("ClassName")
+class nostr_nip55_signer : Service() {
+    override fun onCreate() {
+        Log.d("NostrSignerService", "Service class = ${this::class.qualifiedName}")
+        super.onCreate()
+    }
+
+    private val binder = object : INostrSigner.Stub() {
+        override fun getPublicKey(): String? {
+            Log.d(Amber.TAG, "getPublicKey")
+            val callingPackage = applicationContext.packageManager.getPackagesForUid(getCallingUid())?.firstOrNull()
+
+            Log.d(Amber.TAG, callingPackage ?: "")
+
+            return "123"
+        }
+
+        override fun signEvent(unsigned_event: String?): String? {
+            Log.d(Amber.TAG, "signEvent")
+            return null
+        }
+
+        override fun nip44Encrypt(current_user_public_key: String?, public_key: String?, plaintext: String?): String? {
+            Log.d(Amber.TAG, "nip44Encrypt")
+            return null
+        }
+
+        override fun nip44Decrypt(current_user_public_key: String?, public_key: String?, ciphertext: String?): String? {
+            Log.d(Amber.TAG, "nip44Decrypt")
+            return null
+        }
+    }
+
+    override fun onBind(intent: Intent): IBinder {
+        return binder
+    }
+}