diff --git a/securesignals-gma-dev-app/src/main/AndroidManifest.xml b/securesignals-gma-dev-app/src/main/AndroidManifest.xml
index 02047f6..c2b9627 100644
--- a/securesignals-gma-dev-app/src/main/AndroidManifest.xml
+++ b/securesignals-gma-dev-app/src/main/AndroidManifest.xml
@@ -14,7 +14,10 @@
         <!-- Sample AdMob App ID: ca-app-pub-3940256099942544~3347511713 -->
         <meta-data
             android:name="com.google.android.gms.ads.APPLICATION_ID"
-            android:value="ca-app-pub-3940256099942544~3347511713"/>
+            android:value="ca-app-pub-9939518381636264~1092563270"/>
+
+        <!-- Metadata for toggling UID2 and EUID environments. If true, EUID is used. -->
+        <meta-data android:name="uid2_environment_euid" android:value="false"/>
 
         <activity
             android:exported="true"
diff --git a/securesignals-gma-dev-app/src/main/java/com/uid2/dev/BannerActivity.java b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/BannerActivity.java
index 6a3d3e8..d5e4d37 100644
--- a/securesignals-gma-dev-app/src/main/java/com/uid2/dev/BannerActivity.java
+++ b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/BannerActivity.java
@@ -1,5 +1,8 @@
 package com.uid2.dev;
 
+import static com.uid2.dev.utils.BundleExKt.isEnvironmentEUID;
+import static com.uid2.dev.utils.ContextExKt.getMetadata;
+
 import android.os.Bundle;
 import androidx.appcompat.app.AppCompatActivity;
 import android.util.Log;
@@ -11,9 +14,9 @@
 import com.google.android.gms.ads.RequestConfiguration;
 import com.google.android.gms.ads.initialization.InitializationStatus;
 import com.google.android.gms.ads.initialization.OnInitializationCompleteListener;
+import com.uid2.EUIDManager;
 import com.uid2.UID2Manager;
 import com.uid2.data.UID2Identity;
-
 import org.json.JSONObject;
 
 import java.io.BufferedReader;
@@ -101,7 +104,11 @@ private void loadUID2Identity() {
                 refreshFrom,
                 refreshExpires,
                 fromJsonIdentity.getRefreshResponseKey());
-            UID2Manager.getInstance().setIdentity(identity);
+            if (isEnvironmentEUID(getMetadata(this))) {
+                EUIDManager.getInstance().setIdentity(identity);
+            } else {
+                UID2Manager.getInstance().setIdentity(identity);
+            }
         } catch (Exception e) {
             Log.e(TAG, "Error loading Identity: " + e);
         }
diff --git a/securesignals-gma-dev-app/src/main/java/com/uid2/dev/GMADevApplication.kt b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/GMADevApplication.kt
index 5becb71..0d34a6a 100644
--- a/securesignals-gma-dev-app/src/main/java/com/uid2/dev/GMADevApplication.kt
+++ b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/GMADevApplication.kt
@@ -2,8 +2,11 @@ package com.uid2.dev
 
 import android.app.Application
 import android.util.Log
+import com.uid2.EUIDManager
 import com.uid2.UID2Manager
 import com.uid2.UID2Manager.Environment.Production
+import com.uid2.dev.utils.getMetadata
+import com.uid2.dev.utils.isEnvironmentEUID
 
 class GMADevApplication : Application() {
 
@@ -13,11 +16,18 @@ class GMADevApplication : Application() {
         // Initialise the UID2Manager class. We will use it's DefaultNetworkSession rather than providing our own
         // custom implementation. This can be done to allow wrapping something like OkHttp.
         try {
-            UID2Manager.init(
-                context = this,
-                environment = Production,
-                isLoggingEnabled = true,
-            )
+            if (getMetadata().isEnvironmentEUID()) {
+                EUIDManager.init(
+                    context = this,
+                    isLoggingEnabled = true,
+                )
+            } else {
+                UID2Manager.init(
+                    context = this,
+                    environment = Production,
+                    isLoggingEnabled = true,
+                )
+            }
         } catch (ex: Exception) {
             Log.e("GMADevApplication", "Error initialising UID2Manager", ex)
         }
diff --git a/securesignals-gma-dev-app/src/main/java/com/uid2/dev/utils/BundleEx.kt b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/utils/BundleEx.kt
new file mode 100644
index 0000000..2a68700
--- /dev/null
+++ b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/utils/BundleEx.kt
@@ -0,0 +1,7 @@
+package com.uid2.dev.utils
+
+import android.os.Bundle
+
+private const val UID2_ENVIRONMENT_EUID = "uid2_environment_euid"
+
+fun Bundle.isEnvironmentEUID(): Boolean = getBoolean(UID2_ENVIRONMENT_EUID, false)
diff --git a/securesignals-gma-dev-app/src/main/java/com/uid2/dev/utils/ContextEx.kt b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/utils/ContextEx.kt
new file mode 100644
index 0000000..91eef6c
--- /dev/null
+++ b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/utils/ContextEx.kt
@@ -0,0 +1,10 @@
+package com.uid2.dev.utils
+
+import android.content.Context
+import android.content.pm.PackageManager
+import android.os.Bundle
+
+fun Context.getMetadata(): Bundle = packageManager.getApplicationInfoCompat(
+    packageName,
+    PackageManager.GET_META_DATA,
+).metaData
diff --git a/securesignals-gma-dev-app/src/main/java/com/uid2/dev/utils/PackageManagerEx.kt b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/utils/PackageManagerEx.kt
new file mode 100644
index 0000000..e4f930c
--- /dev/null
+++ b/securesignals-gma-dev-app/src/main/java/com/uid2/dev/utils/PackageManagerEx.kt
@@ -0,0 +1,14 @@
+package com.uid2.dev.utils
+
+import android.content.pm.ApplicationInfo
+import android.content.pm.PackageManager
+import android.os.Build
+
+fun PackageManager.getApplicationInfoCompat(packageName: String, flags: Int = 0): ApplicationInfo =
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+        @Suppress("WrongConstant")
+        getApplicationInfo(packageName, PackageManager.ApplicationInfoFlags.of(flags.toLong()))
+    } else {
+        @Suppress("DEPRECATION")
+        getApplicationInfo(packageName, flags)
+    }
diff --git a/securesignals-gma-dev-app/src/main/res/values/strings.xml b/securesignals-gma-dev-app/src/main/res/values/strings.xml
index a6e467a..e6ee491 100644
--- a/securesignals-gma-dev-app/src/main/res/values/strings.xml
+++ b/securesignals-gma-dev-app/src/main/res/values/strings.xml
@@ -6,6 +6,6 @@
     <string name="action_settings">Settings</string>
 
     <!-- This is an ad unit ID for a test ad. Replace with your own banner ad unit id. -->
-    <string name="banner_ad_unit_id">ca-app-pub-3940256099942544/6300978111</string>
+    <string name="banner_ad_unit_id">/21775744923/example/fixed-size-banner</string>
 
 </resources>
diff --git a/securesignals-gma/src/main/java/com/uid2/securesignals/gma/EUIDMediationAdapter.kt b/securesignals-gma/src/main/java/com/uid2/securesignals/gma/EUIDMediationAdapter.kt
new file mode 100644
index 0000000..78e1e0f
--- /dev/null
+++ b/securesignals-gma/src/main/java/com/uid2/securesignals/gma/EUIDMediationAdapter.kt
@@ -0,0 +1,76 @@
+package com.uid2.securesignals.gma
+
+import android.content.Context
+import com.google.android.gms.ads.AdError
+import com.google.android.gms.ads.mediation.InitializationCompleteCallback
+import com.google.android.gms.ads.mediation.MediationConfiguration
+import com.google.android.gms.ads.mediation.rtb.RtbAdapter
+import com.google.android.gms.ads.mediation.rtb.RtbSignalData
+import com.google.android.gms.ads.mediation.rtb.SignalCallbacks
+import com.uid2.EUIDManager
+import com.uid2.UID2
+import com.google.android.gms.ads.mediation.VersionInfo as GmaVersionInfo
+
+/**
+ * An implementation of Google's GMS RtbAdapter that integrates UID2 tokens, accessed via the UID2Manager.
+ */
+public class EUIDMediationAdapter : RtbAdapter() {
+
+    /**
+     * Gets the version of the UID2 SDK.
+     */
+    @Suppress("DEPRECATION")
+    public override fun getSDKVersionInfo(): GmaVersionInfo = UID2.getVersionInfo().let {
+        GmaVersionInfo(it.major, it.minor, it.patch)
+    }
+
+    /**
+     * Gets the version of the UID2 Secure Signals plugin.
+     */
+    @Suppress("DEPRECATION")
+    public override fun getVersionInfo(): GmaVersionInfo = PluginVersion.getVersionInfo().let {
+        GmaVersionInfo(it.major, it.minor, it.patch)
+    }
+
+    /**
+     * Initialises the UID2 SDK with the given Context.
+     */
+    override fun initialize(
+        context: Context,
+        initializationCompleteCallback: InitializationCompleteCallback,
+        mediationConfigurations: MutableList<MediationConfiguration>,
+    ) {
+        // It's possible that the UID2Manager is already initialised. If so, it's a no-op.
+        if (!EUIDManager.isInitialized()) {
+            EUIDManager.init(context)
+        }
+
+        // After we've asked to initialize the manager, we should wait until it's complete before reporting success.
+        // This will potentially allow any previously persisted identity to be fully restored before we allow any
+        // signals to be collected.
+        EUIDManager.getInstance().addOnInitializedListener(initializationCompleteCallback::onInitializationSucceeded)
+    }
+
+    /**
+     * Collects the UID2 advertising token, if available.
+     */
+    override fun collectSignals(rtbSignalData: RtbSignalData, signalCallbacks: SignalCallbacks) {
+        EUIDManager.getInstance().let { manager ->
+            val token = manager.getAdvertisingToken()
+            if (token != null) {
+                signalCallbacks.onSuccess(token)
+            } else {
+                // We include the IdentityStatus in the "error" to have better visibility on why the Advertising Token
+                // was not present. There are a number of valid reasons why we don't have a token, but we are still
+                // required to report these as "failures".
+                signalCallbacks.onFailure(
+                    AdError(
+                        manager.currentIdentityStatus.value,
+                        "No Advertising Token",
+                        "UID2",
+                    ),
+                )
+            }
+        }
+    }
+}
diff --git a/securesignals-gma/src/test/java/com/uid2/securesignals/gma/EUIDMediationAdapterTest.kt b/securesignals-gma/src/test/java/com/uid2/securesignals/gma/EUIDMediationAdapterTest.kt
new file mode 100644
index 0000000..edb1900
--- /dev/null
+++ b/securesignals-gma/src/test/java/com/uid2/securesignals/gma/EUIDMediationAdapterTest.kt
@@ -0,0 +1,29 @@
+package com.uid2.securesignals.gma
+
+import com.uid2.UID2
+import org.junit.Assert
+import org.junit.Test
+
+class EUIDMediationAdapterTest {
+    @Test
+    fun `test SDK version`() {
+        val adapter = EUIDMediationAdapter()
+        val version = adapter.versionInfo
+        val expectedVersion = UID2.getVersionInfo()
+
+        Assert.assertEquals(expectedVersion.major, version.majorVersion)
+        Assert.assertEquals(expectedVersion.minor, version.minorVersion)
+        Assert.assertEquals(expectedVersion.patch, version.microVersion)
+    }
+
+    @Test
+    fun `test plugin version`() {
+        val adapter = EUIDMediationAdapter()
+        val version = adapter.sdkVersionInfo
+        val expectedVersion = PluginVersion.getVersionInfo()
+
+        Assert.assertEquals(expectedVersion.major, version.majorVersion)
+        Assert.assertEquals(expectedVersion.minor, version.minorVersion)
+        Assert.assertEquals(expectedVersion.patch, version.microVersion)
+    }
+}