diff --git a/core/java/android/hardware/biometrics/BiometricConstants.java b/core/java/android/hardware/biometrics/BiometricConstants.java
index 76d50bd..43ef33e 100644
--- a/core/java/android/hardware/biometrics/BiometricConstants.java
+++ b/core/java/android/hardware/biometrics/BiometricConstants.java
@@ -145,6 +145,12 @@
     int BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED = 15;
 
     /**
+     * Authentication cannot proceed because re-enrollment is required.
+     * @hide
+     */
+    int BIOMETRIC_ERROR_RE_ENROLL = 16;
+
+    /**
      * This constant is only used by SystemUI. It notifies SystemUI that authentication was paused
      * because the authentication attempt was unsuccessful.
      * @hide
diff --git a/core/java/android/hardware/biometrics/BiometricFaceConstants.java b/core/java/android/hardware/biometrics/BiometricFaceConstants.java
index eafcf52..4385b1da 100644
--- a/core/java/android/hardware/biometrics/BiometricFaceConstants.java
+++ b/core/java/android/hardware/biometrics/BiometricFaceConstants.java
@@ -153,6 +153,12 @@
     int BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED = 15;
 
     /**
+     * Authentication cannot proceed because re-enrollment is required.
+     * @hide
+     */
+    int BIOMETRIC_ERROR_RE_ENROLL = 16;
+
+    /**
      * @hide
      */
     int FACE_ERROR_VENDOR_BASE = 1000;
diff --git a/core/java/android/hardware/biometrics/BiometricFingerprintConstants.java b/core/java/android/hardware/biometrics/BiometricFingerprintConstants.java
index 01f0e71..30e24d2e 100644
--- a/core/java/android/hardware/biometrics/BiometricFingerprintConstants.java
+++ b/core/java/android/hardware/biometrics/BiometricFingerprintConstants.java
@@ -166,6 +166,12 @@
     public static final int BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED = 15;
 
     /**
+     * Authentication cannot proceed because re-enrollment is required.
+     * @hide
+     */
+    int BIOMETRIC_ERROR_RE_ENROLL = 16;
+
+    /**
      * @hide
      */
     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
diff --git a/core/java/android/hardware/face/FaceManager.java b/core/java/android/hardware/face/FaceManager.java
index 886a8c1..22e3101 100644
--- a/core/java/android/hardware/face/FaceManager.java
+++ b/core/java/android/hardware/face/FaceManager.java
@@ -820,6 +820,9 @@
             case BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED:
                 return context.getString(
                         com.android.internal.R.string.face_error_security_update_required);
+            case BIOMETRIC_ERROR_RE_ENROLL:
+                return context.getString(
+                        com.android.internal.R.string.face_recalibrate_notification_content);
             case FACE_ERROR_VENDOR: {
                 String[] msgArray = context.getResources().getStringArray(
                         com.android.internal.R.array.face_error_vendor);
diff --git a/services/core/java/com/android/server/biometrics/sensors/face/ReEnrollNotificationUtils.java b/services/core/java/com/android/server/biometrics/sensors/face/ReEnrollNotificationUtils.java
new file mode 100644
index 0000000..f35a520
--- /dev/null
+++ b/services/core/java/com/android/server/biometrics/sensors/face/ReEnrollNotificationUtils.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.biometrics.sensors.face;
+
+import android.annotation.NonNull;
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.os.UserHandle;
+
+import com.android.internal.R;
+
+public class ReEnrollNotificationUtils {
+
+    private static final String NOTIFICATION_TAG = "FaceService";
+    private static final int NOTIFICATION_ID = 1;
+
+    public static void showReEnrollmentNotification(@NonNull Context context) {
+        final NotificationManager notificationManager =
+                context.getSystemService(NotificationManager.class);
+
+        final String name =
+                context.getString(R.string.face_recalibrate_notification_name);
+        final String title =
+                context.getString(R.string.face_recalibrate_notification_title);
+        final String content =
+                context.getString(R.string.face_recalibrate_notification_content);
+
+        final Intent intent = new Intent("android.settings.FACE_SETTINGS");
+        intent.setPackage("com.android.settings");
+
+        final PendingIntent pendingIntent = PendingIntent.getActivityAsUser(context,
+                0 /* requestCode */, intent, PendingIntent.FLAG_IMMUTABLE /* flags */,
+                null /* options */, UserHandle.CURRENT);
+
+        final String channelName = "FaceEnrollNotificationChannel";
+
+        final NotificationChannel channel = new NotificationChannel(channelName, name,
+                NotificationManager.IMPORTANCE_HIGH);
+        final Notification notification = new Notification.Builder(context, channelName)
+                .setSmallIcon(R.drawable.ic_lock)
+                .setContentTitle(title)
+                .setContentText(content)
+                .setSubText(name)
+                .setOnlyAlertOnce(true)
+                .setLocalOnly(true)
+                .setAutoCancel(true)
+                .setCategory(Notification.CATEGORY_SYSTEM)
+                .setContentIntent(pendingIntent)
+                .setVisibility(Notification.VISIBILITY_SECRET)
+                .build();
+
+        notificationManager.createNotificationChannel(channel);
+        notificationManager.notifyAsUser(NOTIFICATION_TAG,
+                NOTIFICATION_ID, notification,
+                UserHandle.CURRENT);
+    }
+
+    public static void cancelNotification(@NonNull Context context) {
+        final NotificationManager notificationManager =
+                context.getSystemService(NotificationManager.class);
+        notificationManager.cancelAsUser(NOTIFICATION_TAG, NOTIFICATION_ID, UserHandle.CURRENT);
+    }
+
+}
diff --git a/services/core/java/com/android/server/biometrics/sensors/face/aidl/FaceAuthenticationClient.java b/services/core/java/com/android/server/biometrics/sensors/face/aidl/FaceAuthenticationClient.java
index 8f55402..089cf1e 100644
--- a/services/core/java/com/android/server/biometrics/sensors/face/aidl/FaceAuthenticationClient.java
+++ b/services/core/java/com/android/server/biometrics/sensors/face/aidl/FaceAuthenticationClient.java
@@ -41,6 +41,7 @@
 import com.android.server.biometrics.sensors.LockoutCache;
 import com.android.server.biometrics.sensors.LockoutConsumer;
 import com.android.server.biometrics.sensors.LockoutTracker;
+import com.android.server.biometrics.sensors.face.ReEnrollNotificationUtils;
 import com.android.server.biometrics.sensors.face.UsageStats;
 
 import java.util.ArrayList;
@@ -163,6 +164,9 @@
                     vibrateError();
                 }
                 break;
+            case BiometricConstants.BIOMETRIC_ERROR_RE_ENROLL:
+                ReEnrollNotificationUtils.showReEnrollmentNotification(getContext());
+                break;
             default:
                 break;
         }
diff --git a/services/core/java/com/android/server/biometrics/sensors/face/aidl/FaceEnrollClient.java b/services/core/java/com/android/server/biometrics/sensors/face/aidl/FaceEnrollClient.java
index 898d81b..0eb51fd 100644
--- a/services/core/java/com/android/server/biometrics/sensors/face/aidl/FaceEnrollClient.java
+++ b/services/core/java/com/android/server/biometrics/sensors/face/aidl/FaceEnrollClient.java
@@ -41,6 +41,7 @@
 import com.android.server.biometrics.sensors.ClientMonitorCallbackConverter;
 import com.android.server.biometrics.sensors.EnrollClient;
 import com.android.server.biometrics.sensors.face.FaceUtils;
+import com.android.server.biometrics.sensors.face.ReEnrollNotificationUtils;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -85,6 +86,13 @@
     }
 
     @Override
+    public void start(@NonNull Callback callback) {
+        super.start(callback);
+
+        ReEnrollNotificationUtils.cancelNotification(getContext());
+    }
+
+    @Override
     public void destroy() {
         try {
             AidlNativeHandleUtils.close(mPreviewSurface);
diff --git a/services/core/java/com/android/server/biometrics/sensors/face/hidl/Face10.java b/services/core/java/com/android/server/biometrics/sensors/face/hidl/Face10.java
index e46661a..66eeb06 100644
--- a/services/core/java/com/android/server/biometrics/sensors/face/hidl/Face10.java
+++ b/services/core/java/com/android/server/biometrics/sensors/face/hidl/Face10.java
@@ -19,7 +19,6 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.app.ActivityManager;
-import android.app.NotificationManager;
 import android.app.SynchronousUserSwitchObserver;
 import android.app.UserSwitchObserver;
 import android.content.Context;
@@ -70,6 +69,7 @@
 import com.android.server.biometrics.sensors.RemovalConsumer;
 import com.android.server.biometrics.sensors.face.FaceUtils;
 import com.android.server.biometrics.sensors.face.LockoutHalImpl;
+import com.android.server.biometrics.sensors.face.ReEnrollNotificationUtils;
 import com.android.server.biometrics.sensors.face.ServiceProvider;
 import com.android.server.biometrics.sensors.face.UsageStats;
 
@@ -95,8 +95,6 @@
 
     private static final String TAG = "Face10";
     private static final int ENROLL_TIMEOUT_SEC = 75;
-    static final String NOTIFICATION_TAG = "FaceService";
-    static final int NOTIFICATION_ID = 1;
 
     private boolean mTestHalEnabled;
 
@@ -108,7 +106,6 @@
     @NonNull private final LockoutResetDispatcher mLockoutResetDispatcher;
     @NonNull private final LockoutHalImpl mLockoutTracker;
     @NonNull private final UsageStats mUsageStats;
-    @NonNull private final NotificationManager mNotificationManager;
     @NonNull private final Map<Integer, Long> mAuthenticatorIds;
     @Nullable private IBiometricsFace mDaemon;
     @NonNull private final HalResultController mHalResultController;
@@ -342,7 +339,6 @@
         mUsageStats = new UsageStats(context);
         mAuthenticatorIds = new HashMap<>();
         mLazyDaemon = Face10.this::getDaemon;
-        mNotificationManager = mContext.getSystemService(NotificationManager.class);
         mLockoutTracker = new LockoutHalImpl();
         mLockoutResetDispatcher = lockoutResetDispatcher;
         mHalResultController = new HalResultController(sensorId, context, mHandler, mScheduler,
@@ -606,8 +602,7 @@
         mHandler.post(() -> {
             scheduleUpdateActiveUserWithoutHandler(userId);
 
-            mNotificationManager.cancelAsUser(NOTIFICATION_TAG, NOTIFICATION_ID,
-                    UserHandle.CURRENT);
+            ReEnrollNotificationUtils.cancelNotification(mContext);
 
             final FaceEnrollClient client = new FaceEnrollClient(mContext, mLazyDaemon, token,
                     new ClientMonitorCallbackConverter(receiver), userId, hardwareAuthToken,
diff --git a/services/core/java/com/android/server/biometrics/sensors/face/hidl/FaceAuthenticationClient.java b/services/core/java/com/android/server/biometrics/sensors/face/hidl/FaceAuthenticationClient.java
index a4b3ac5..3ca51d3 100644
--- a/services/core/java/com/android/server/biometrics/sensors/face/hidl/FaceAuthenticationClient.java
+++ b/services/core/java/com/android/server/biometrics/sensors/face/hidl/FaceAuthenticationClient.java
@@ -17,12 +17,7 @@
 package com.android.server.biometrics.sensors.face.hidl;
 
 import android.annotation.NonNull;
-import android.app.Notification;
-import android.app.NotificationChannel;
-import android.app.NotificationManager;
-import android.app.PendingIntent;
 import android.content.Context;
-import android.content.Intent;
 import android.content.res.Resources;
 import android.hardware.biometrics.BiometricAuthenticator;
 import android.hardware.biometrics.BiometricConstants;
@@ -32,7 +27,6 @@
 import android.hardware.face.FaceManager;
 import android.os.IBinder;
 import android.os.RemoteException;
-import android.os.UserHandle;
 import android.util.Slog;
 
 import com.android.internal.R;
@@ -40,6 +34,7 @@
 import com.android.server.biometrics.sensors.AuthenticationClient;
 import com.android.server.biometrics.sensors.ClientMonitorCallbackConverter;
 import com.android.server.biometrics.sensors.LockoutTracker;
+import com.android.server.biometrics.sensors.face.ReEnrollNotificationUtils;
 import com.android.server.biometrics.sensors.face.UsageStats;
 
 import java.util.ArrayList;
@@ -52,7 +47,7 @@
 
     private static final String TAG = "FaceAuthenticationClient";
 
-    private final NotificationManager mNotificationManager;
+
     private final UsageStats mUsageStats;
 
     private final int[] mBiometricPromptIgnoreList;
@@ -72,7 +67,6 @@
                 owner, cookie, requireConfirmation, sensorId, isStrongBiometric,
                 BiometricsProtoEnums.MODALITY_FACE, statsClient, null /* taskStackListener */,
                 lockoutTracker, isKeyguard);
-        mNotificationManager = context.getSystemService(NotificationManager.class);
         mUsageStats = usageStats;
 
         final Resources resources = getContext().getResources();
@@ -188,41 +182,7 @@
         mLastAcquire = acquireInfo;
 
         if (acquireInfo == FaceManager.FACE_ACQUIRED_RECALIBRATE) {
-            final String name =
-                    getContext().getString(R.string.face_recalibrate_notification_name);
-            final String title =
-                    getContext().getString(R.string.face_recalibrate_notification_title);
-            final String content =
-                    getContext().getString(R.string.face_recalibrate_notification_content);
-
-            final Intent intent = new Intent("android.settings.FACE_SETTINGS");
-            intent.setPackage("com.android.settings");
-
-            final PendingIntent pendingIntent = PendingIntent.getActivityAsUser(getContext(),
-                    0 /* requestCode */, intent, PendingIntent.FLAG_IMMUTABLE /* flags */,
-                    null /* options */, UserHandle.CURRENT);
-
-            final String channelName = "FaceEnrollNotificationChannel";
-
-            NotificationChannel channel = new NotificationChannel(channelName, name,
-                    NotificationManager.IMPORTANCE_HIGH);
-            Notification notification = new Notification.Builder(getContext(), channelName)
-                    .setSmallIcon(R.drawable.ic_lock)
-                    .setContentTitle(title)
-                    .setContentText(content)
-                    .setSubText(name)
-                    .setOnlyAlertOnce(true)
-                    .setLocalOnly(true)
-                    .setAutoCancel(true)
-                    .setCategory(Notification.CATEGORY_SYSTEM)
-                    .setContentIntent(pendingIntent)
-                    .setVisibility(Notification.VISIBILITY_SECRET)
-                    .build();
-
-            mNotificationManager.createNotificationChannel(channel);
-            mNotificationManager.notifyAsUser(Face10.NOTIFICATION_TAG,
-                    Face10.NOTIFICATION_ID, notification,
-                    UserHandle.CURRENT);
+            ReEnrollNotificationUtils.showReEnrollmentNotification(getContext());
         }
 
         final boolean shouldSend = shouldSend(acquireInfo, vendorCode);