diff --git a/core/java/android/hardware/biometrics/BiometricNativeHandleUtils.java b/core/java/android/hardware/biometrics/BiometricNativeHandleUtils.java
deleted file mode 100644
index 5544eae..0000000
--- a/core/java/android/hardware/biometrics/BiometricNativeHandleUtils.java
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2020 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 android.hardware.biometrics;
-
-import android.os.NativeHandle;
-import android.os.ParcelFileDescriptor;
-
-import java.io.IOException;
-
-/**
- * A class that contains utilities for IBiometricNativeHandle.
- *
- * @hide
- */
-public final class BiometricNativeHandleUtils {
-
-    private BiometricNativeHandleUtils() {
-    }
-
-    /**
-     * Converts a {@link NativeHandle} into an {@link IBiometricNativeHandle} by duplicating the
-     * underlying file descriptors.
-     *
-     * Both the original and new handle must be closed after use.
-     *
-     * @param h {@link NativeHandle}. Usually used to identify a WindowManager window. Can be null.
-     * @return A {@link IBiometricNativeHandle} representation of {@code h}. Will be null if
-     * {@code h} or its raw file descriptors are null.
-     */
-    public static IBiometricNativeHandle dup(NativeHandle h) {
-        IBiometricNativeHandle handle = null;
-        if (h != null && h.getFileDescriptors() != null && h.getInts() != null) {
-            handle = new IBiometricNativeHandle();
-            handle.ints = h.getInts().clone();
-            handle.fds = new ParcelFileDescriptor[h.getFileDescriptors().length];
-            for (int i = 0; i < h.getFileDescriptors().length; ++i) {
-                try {
-                    handle.fds[i] = ParcelFileDescriptor.dup(h.getFileDescriptors()[i]);
-                } catch (IOException e) {
-                    return null;
-                }
-            }
-        }
-        return handle;
-    }
-
-    /**
-     * Closes the handle's file descriptors.
-     *
-     * @param h {@link IBiometricNativeHandle} handle.
-     */
-    public static void close(IBiometricNativeHandle h) {
-        if (h != null) {
-            for (ParcelFileDescriptor fd : h.fds) {
-                if (fd != null) {
-                    try {
-                        fd.close();
-                    } catch (IOException e) {
-                        // do nothing.
-                    }
-                }
-            }
-        }
-    }
-}
diff --git a/core/java/android/hardware/biometrics/IBiometricNativeHandle.aidl b/core/java/android/hardware/biometrics/IBiometricNativeHandle.aidl
deleted file mode 100644
index 6dcdc1b..0000000
--- a/core/java/android/hardware/biometrics/IBiometricNativeHandle.aidl
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * Copyright (C) 2020 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 android.hardware.biometrics;
-
-/**
- * Representation of a native handle.
- * Copied from /common/aidl/android/hardware/common/NativeHandle.aidl
- * @hide
- */
-parcelable IBiometricNativeHandle {
-    ParcelFileDescriptor[] fds;
-    int[] ints;
-}
diff --git a/core/java/android/hardware/face/FaceManager.java b/core/java/android/hardware/face/FaceManager.java
index b422252..23e38ae 100644
--- a/core/java/android/hardware/face/FaceManager.java
+++ b/core/java/android/hardware/face/FaceManager.java
@@ -29,9 +29,7 @@
 import android.hardware.biometrics.BiometricAuthenticator;
 import android.hardware.biometrics.BiometricConstants;
 import android.hardware.biometrics.BiometricFaceConstants;
-import android.hardware.biometrics.BiometricNativeHandleUtils;
 import android.hardware.biometrics.CryptoObject;
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.os.Binder;
 import android.os.CancellationSignal;
@@ -40,7 +38,6 @@
 import android.os.IBinder;
 import android.os.IRemoteCallback;
 import android.os.Looper;
-import android.os.NativeHandle;
 import android.os.PowerManager;
 import android.os.RemoteException;
 import android.os.Trace;
@@ -250,19 +247,6 @@
     }
 
     /**
-     * Defaults to {@link FaceManager#enroll(int, byte[], CancellationSignal, EnrollmentCallback,
-     * int[], NativeHandle)} with {@code windowId} set to null.
-     *
-     * @see FaceManager#enroll(int, byte[], CancellationSignal, EnrollmentCallback, int[],
-     * NativeHandle)
-     */
-    @RequiresPermission(MANAGE_BIOMETRIC)
-    public void enroll(int userId, byte[] token, CancellationSignal cancel,
-            EnrollmentCallback callback, int[] disabledFeatures) {
-        enroll(userId, token, cancel, callback, disabledFeatures, null /* windowId */);
-    }
-
-    /**
      * Request face authentication enrollment. This call operates the face authentication hardware
      * and starts capturing images. Progress will be indicated by callbacks to the
      * {@link EnrollmentCallback} object. It terminates when
@@ -277,13 +261,11 @@
      * @param flags    optional flags
      * @param userId   the user to whom this face will belong to
      * @param callback an object to receive enrollment events
-     * @param windowId optional ID of a camera preview window for a single-camera device. Must be
-     *                 null if not used.
      * @hide
      */
     @RequiresPermission(MANAGE_BIOMETRIC)
     public void enroll(int userId, byte[] token, CancellationSignal cancel,
-            EnrollmentCallback callback, int[] disabledFeatures, @Nullable NativeHandle windowId) {
+            EnrollmentCallback callback, int[] disabledFeatures) {
         if (callback == null) {
             throw new IllegalArgumentException("Must supply an enrollment callback");
         }
@@ -298,72 +280,20 @@
         }
 
         if (mService != null) {
-            IBiometricNativeHandle handle = BiometricNativeHandleUtils.dup(windowId);
             try {
                 mEnrollmentCallback = callback;
                 Trace.beginSection("FaceManager#enroll");
                 mService.enroll(userId, mToken, token, mServiceReceiver,
-                        mContext.getOpPackageName(), disabledFeatures, handle);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Remote exception in enroll: ", e);
-                // Though this may not be a hardware issue, it will cause apps to give up or
-                // try again later.
-                callback.onEnrollmentError(FACE_ERROR_HW_UNAVAILABLE,
-                        getErrorString(mContext, FACE_ERROR_HW_UNAVAILABLE,
-                                0 /* vendorCode */));
-            } finally {
-                Trace.endSection();
-                BiometricNativeHandleUtils.close(handle);
-            }
-        }
-    }
-
-    /**
-     * Request face authentication enrollment for a remote client, for example Android Auto.
-     * This call operates the face authentication hardware and starts capturing images.
-     * Progress will be indicated by callbacks to the
-     * {@link EnrollmentCallback} object. It terminates when
-     * {@link EnrollmentCallback#onEnrollmentError(int, CharSequence)} or
-     * {@link EnrollmentCallback#onEnrollmentProgress(int) is called with remaining == 0, at
-     * which point the object is no longer valid. The operation can be canceled by using the
-     * provided cancel object.
-     *
-     * @param token    a unique token provided by a recent creation or verification of device
-     *                 credentials (e.g. pin, pattern or password).
-     * @param cancel   an object that can be used to cancel enrollment
-     * @param userId   the user to whom this face will belong to
-     * @param callback an object to receive enrollment events
-     * @hide
-     */
-    @RequiresPermission(MANAGE_BIOMETRIC)
-    public void enrollRemotely(int userId, byte[] token, CancellationSignal cancel,
-            EnrollmentCallback callback, int[] disabledFeatures) {
-        if (callback == null) {
-            throw new IllegalArgumentException("Must supply an enrollment callback");
-        }
-
-        if (cancel != null) {
-            if (cancel.isCanceled()) {
-                Log.w(TAG, "enrollRemotely is already canceled.");
-                return;
-            } else {
-                cancel.setOnCancelListener(new OnEnrollCancelListener());
-            }
-        }
-
-        if (mService != null) {
-            try {
-                mEnrollmentCallback = callback;
-                Trace.beginSection("FaceManager#enrollRemotely");
-                mService.enrollRemotely(userId, mToken, token, mServiceReceiver,
                         mContext.getOpPackageName(), disabledFeatures);
             } catch (RemoteException e) {
-                Log.w(TAG, "Remote exception in enrollRemotely: ", e);
-                // Though this may not be a hardware issue, it will cause apps to give up or
-                // try again later.
-                callback.onEnrollmentError(FACE_ERROR_HW_UNAVAILABLE,
-                        getErrorString(mContext, FACE_ERROR_HW_UNAVAILABLE,
+                Log.w(TAG, "Remote exception in enroll: ", e);
+                if (callback != null) {
+                    // Though this may not be a hardware issue, it will cause apps to give up or
+                    // try again later.
+                    callback.onEnrollmentError(FACE_ERROR_HW_UNAVAILABLE,
+                            getErrorString(mContext, FACE_ERROR_HW_UNAVAILABLE,
                                 0 /* vendorCode */));
+                }
             } finally {
                 Trace.endSection();
             }
diff --git a/core/java/android/hardware/face/IFaceService.aidl b/core/java/android/hardware/face/IFaceService.aidl
index 37b7456..03937e0 100644
--- a/core/java/android/hardware/face/IFaceService.aidl
+++ b/core/java/android/hardware/face/IFaceService.aidl
@@ -15,7 +15,6 @@
  */
 package android.hardware.face;
 
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.hardware.biometrics.IBiometricServiceReceiverInternal;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.hardware.face.IFaceServiceReceiver;
@@ -52,10 +51,6 @@
 
     // Start face enrollment
     void enroll(int userId, IBinder token, in byte [] cryptoToken, IFaceServiceReceiver receiver,
-            String opPackageName, in int [] disabledFeatures, in IBiometricNativeHandle windowId);
-
-    // Start remote face enrollment
-    void enrollRemotely(int userId, IBinder token, in byte [] cryptoToken, IFaceServiceReceiver receiver,
             String opPackageName, in int [] disabledFeatures);
 
     // Cancel enrollment in progress
diff --git a/core/java/android/hardware/fingerprint/FingerprintManager.java b/core/java/android/hardware/fingerprint/FingerprintManager.java
index 9145142..d57a7e4b 100644
--- a/core/java/android/hardware/fingerprint/FingerprintManager.java
+++ b/core/java/android/hardware/fingerprint/FingerprintManager.java
@@ -32,9 +32,7 @@
 import android.content.pm.PackageManager;
 import android.hardware.biometrics.BiometricAuthenticator;
 import android.hardware.biometrics.BiometricFingerprintConstants;
-import android.hardware.biometrics.BiometricNativeHandleUtils;
 import android.hardware.biometrics.BiometricPrompt;
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.os.Binder;
 import android.os.CancellationSignal;
@@ -43,7 +41,6 @@
 import android.os.IBinder;
 import android.os.IRemoteCallback;
 import android.os.Looper;
-import android.os.NativeHandle;
 import android.os.PowerManager;
 import android.os.RemoteException;
 import android.os.UserHandle;
@@ -415,33 +412,15 @@
     }
 
     /**
-     * Defaults to {@link FingerprintManager#authenticate(CryptoObject, CancellationSignal, int,
-     * AuthenticationCallback, Handler, int, NativeHandle)} with {@code windowId} set to null.
-     *
-     * @see FingerprintManager#authenticate(CryptoObject, CancellationSignal, int,
-     * AuthenticationCallback, Handler, int, NativeHandle)
-     *
+     * Per-user version, see {@link FingerprintManager#authenticate(CryptoObject,
+     * CancellationSignal, int, AuthenticationCallback, Handler)}. This version does not
+     * display the BiometricPrompt.
+     * @param userId the user ID that the fingerprint hardware will authenticate for.
      * @hide
      */
     @RequiresPermission(anyOf = {USE_BIOMETRIC, USE_FINGERPRINT})
     public void authenticate(@Nullable CryptoObject crypto, @Nullable CancellationSignal cancel,
             int flags, @NonNull AuthenticationCallback callback, Handler handler, int userId) {
-        authenticate(crypto, cancel, flags, callback, handler, userId, null /* windowId */);
-    }
-
-    /**
-     * Per-user version, see {@link FingerprintManager#authenticate(CryptoObject,
-     * CancellationSignal, int, AuthenticationCallback, Handler)}. This version does not
-     * display the BiometricPrompt.
-     * @param userId the user ID that the fingerprint hardware will authenticate for.
-     * @param windowId for optical fingerprint sensors that require active illumination by the OLED
-     *        display. Should be null for devices that don't require illumination.
-     * @hide
-     */
-    @RequiresPermission(anyOf = {USE_BIOMETRIC, USE_FINGERPRINT})
-    public void authenticate(@Nullable CryptoObject crypto, @Nullable CancellationSignal cancel,
-            int flags, @NonNull AuthenticationCallback callback, Handler handler, int userId,
-            @Nullable NativeHandle windowId) {
         if (callback == null) {
             throw new IllegalArgumentException("Must supply an authentication callback");
         }
@@ -455,44 +434,26 @@
             }
         }
 
-        if (mService != null) {
-            IBiometricNativeHandle handle = BiometricNativeHandleUtils.dup(windowId);
-            try {
-                useHandler(handler);
-                mAuthenticationCallback = callback;
-                mCryptoObject = crypto;
-                long sessionId = crypto != null ? crypto.getOpId() : 0;
-                mService.authenticate(mToken, sessionId, userId, mServiceReceiver, flags,
-                        mContext.getOpPackageName(), handle);
-            } catch (RemoteException e) {
-                Slog.w(TAG, "Remote exception while authenticating: ", e);
+        if (mService != null) try {
+            useHandler(handler);
+            mAuthenticationCallback = callback;
+            mCryptoObject = crypto;
+            long sessionId = crypto != null ? crypto.getOpId() : 0;
+            mService.authenticate(mToken, sessionId, userId, mServiceReceiver, flags,
+                    mContext.getOpPackageName());
+        } catch (RemoteException e) {
+            Slog.w(TAG, "Remote exception while authenticating: ", e);
+            if (callback != null) {
                 // Though this may not be a hardware issue, it will cause apps to give up or try
                 // again later.
                 callback.onAuthenticationError(FINGERPRINT_ERROR_HW_UNAVAILABLE,
                         getErrorString(mContext, FINGERPRINT_ERROR_HW_UNAVAILABLE,
-                                0 /* vendorCode */));
-            } finally {
-                BiometricNativeHandleUtils.close(handle);
+                            0 /* vendorCode */));
             }
         }
     }
 
     /**
-     * Defaults to {@link FingerprintManager#enroll(byte[], CancellationSignal, int, int,
-     * EnrollmentCallback, NativeHandle)} with {@code windowId} set to null.
-     *
-     * @see FingerprintManager#enroll(byte[], CancellationSignal, int, int, EnrollmentCallback,
-     * NativeHandle)
-     *
-     * @hide
-     */
-    @RequiresPermission(MANAGE_FINGERPRINT)
-    public void enroll(byte [] token, CancellationSignal cancel, int flags,
-            int userId, EnrollmentCallback callback) {
-        enroll(token, cancel, flags, userId, callback, null /* windowId */);
-    }
-
-    /**
      * Request fingerprint enrollment. This call warms up the fingerprint hardware
      * and starts scanning for fingerprints. Progress will be indicated by callbacks to the
      * {@link EnrollmentCallback} object. It terminates when
@@ -510,7 +471,7 @@
      */
     @RequiresPermission(MANAGE_FINGERPRINT)
     public void enroll(byte [] token, CancellationSignal cancel, int flags,
-            int userId, EnrollmentCallback callback, @Nullable NativeHandle windowId) {
+            int userId, EnrollmentCallback callback) {
         if (userId == UserHandle.USER_CURRENT) {
             userId = getCurrentUserId();
         }
@@ -527,21 +488,18 @@
             }
         }
 
-        if (mService != null) {
-            IBiometricNativeHandle handle = BiometricNativeHandleUtils.dup(windowId);
-            try {
-                mEnrollmentCallback = callback;
-                mService.enroll(mToken, token, userId, mServiceReceiver, flags,
-                        mContext.getOpPackageName(), handle);
-            } catch (RemoteException e) {
-                Slog.w(TAG, "Remote exception in enroll: ", e);
+        if (mService != null) try {
+            mEnrollmentCallback = callback;
+            mService.enroll(mToken, token, userId, mServiceReceiver, flags,
+                    mContext.getOpPackageName());
+        } catch (RemoteException e) {
+            Slog.w(TAG, "Remote exception in enroll: ", e);
+            if (callback != null) {
                 // Though this may not be a hardware issue, it will cause apps to give up or try
                 // again later.
                 callback.onEnrollmentError(FINGERPRINT_ERROR_HW_UNAVAILABLE,
                         getErrorString(mContext, FINGERPRINT_ERROR_HW_UNAVAILABLE,
-                                0 /* vendorCode */));
-            } finally {
-                BiometricNativeHandleUtils.close(handle);
+                            0 /* vendorCode */));
             }
         }
     }
diff --git a/core/java/android/hardware/fingerprint/IFingerprintService.aidl b/core/java/android/hardware/fingerprint/IFingerprintService.aidl
index c33e445..2507c84 100644
--- a/core/java/android/hardware/fingerprint/IFingerprintService.aidl
+++ b/core/java/android/hardware/fingerprint/IFingerprintService.aidl
@@ -15,7 +15,6 @@
  */
 package android.hardware.fingerprint;
 
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.hardware.biometrics.IBiometricServiceReceiverInternal;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.hardware.fingerprint.IFingerprintClientActiveCallback;
@@ -32,8 +31,7 @@
     // USE_FINGERPRINT/USE_BIOMETRIC permission. This is effectively deprecated, since it only comes
     // through FingerprintManager now.
     void authenticate(IBinder token, long sessionId, int userId,
-            IFingerprintServiceReceiver receiver, int flags, String opPackageName,
-            in IBiometricNativeHandle windowId);
+            IFingerprintServiceReceiver receiver, int flags, String opPackageName);
 
     // This method prepares the service to start authenticating, but doesn't start authentication.
     // This is protected by the MANAGE_BIOMETRIC signatuer permission. This method should only be
@@ -42,7 +40,7 @@
     // startPreparedClient().
     void prepareForAuthentication(IBinder token, long sessionId, int userId,
             IBiometricServiceReceiverInternal wrapperReceiver, String opPackageName, int cookie,
-            int callingUid, int callingPid, int callingUserId, in IBiometricNativeHandle windowId);
+            int callingUid, int callingPid, int callingUserId);
 
     // Starts authentication with the previously prepared client.
     void startPreparedClient(int cookie);
@@ -57,7 +55,7 @@
 
     // Start fingerprint enrollment
     void enroll(IBinder token, in byte [] cryptoToken, int groupId, IFingerprintServiceReceiver receiver,
-            int flags, String opPackageName, in IBiometricNativeHandle windowId);
+            int flags, String opPackageName);
 
     // Cancel enrollment in progress
     void cancelEnrollment(IBinder token);
diff --git a/services/core/Android.bp b/services/core/Android.bp
index 723c6b1..7a26b21 100644
--- a/services/core/Android.bp
+++ b/services/core/Android.bp
@@ -118,7 +118,7 @@
         "android.hardware.health-V2.1-java",
         "android.hardware.light-java",
         "android.hardware.weaver-V1.0-java",
-        "android.hardware.biometrics.face-V1.1-java",
+        "android.hardware.biometrics.face-V1.0-java",
         "android.hardware.biometrics.fingerprint-V2.2-java",
         "android.hardware.oemlock-V1.0-java",
         "android.hardware.configstore-V1.0-java",
diff --git a/services/core/java/com/android/server/biometrics/AuthenticationClient.java b/services/core/java/com/android/server/biometrics/AuthenticationClient.java
index 7bbda9f..766e5c4 100644
--- a/services/core/java/com/android/server/biometrics/AuthenticationClient.java
+++ b/services/core/java/com/android/server/biometrics/AuthenticationClient.java
@@ -20,14 +20,11 @@
 import android.hardware.biometrics.BiometricAuthenticator;
 import android.hardware.biometrics.BiometricConstants;
 import android.hardware.biometrics.BiometricsProtoEnums;
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.os.IBinder;
-import android.os.NativeHandle;
 import android.os.RemoteException;
 import android.security.KeyStore;
 import android.util.Slog;
 
-import java.io.IOException;
 import java.util.ArrayList;
 
 /**
@@ -44,7 +41,6 @@
     public static final int LOCKOUT_PERMANENT = 2;
 
     private final boolean mRequireConfirmation;
-    private final NativeHandle mWindowId;
 
     // We need to track this state since it's possible for applications to request for
     // authentication while the device is already locked out. In that case, the client is created
@@ -73,25 +69,11 @@
     public AuthenticationClient(Context context, Constants constants,
             BiometricServiceBase.DaemonWrapper daemon, long halDeviceId, IBinder token,
             BiometricServiceBase.ServiceListener listener, int targetUserId, int groupId, long opId,
-            boolean restricted, String owner, int cookie, boolean requireConfirmation,
-            IBiometricNativeHandle windowId) {
+            boolean restricted, String owner, int cookie, boolean requireConfirmation) {
         super(context, constants, daemon, halDeviceId, token, listener, targetUserId, groupId,
                 restricted, owner, cookie);
         mOpId = opId;
         mRequireConfirmation = requireConfirmation;
-        mWindowId = Utils.dupNativeHandle(windowId);
-    }
-
-    @Override
-    public void destroy() {
-        if (mWindowId != null && mWindowId.getFileDescriptors() != null) {
-            try {
-                mWindowId.close();
-            } catch (IOException e) {
-                Slog.e(getLogTag(), "Failed to close windowId NativeHandle: ", e);
-            }
-        }
-        super.destroy();
     }
 
     protected long getStartTimeMs() {
@@ -251,7 +233,7 @@
         onStart();
         try {
             mStartTimeMs = System.currentTimeMillis();
-            final int result = getDaemonWrapper().authenticate(mOpId, getGroupId(), mWindowId);
+            final int result = getDaemonWrapper().authenticate(mOpId, getGroupId());
             if (result != 0) {
                 Slog.w(getLogTag(), "startAuthentication failed, result=" + result);
                 mMetricsLogger.histogram(mConstants.tagAuthStartError(), result);
diff --git a/services/core/java/com/android/server/biometrics/BiometricServiceBase.java b/services/core/java/com/android/server/biometrics/BiometricServiceBase.java
index 49006de..ebd407d 100644
--- a/services/core/java/com/android/server/biometrics/BiometricServiceBase.java
+++ b/services/core/java/com/android/server/biometrics/BiometricServiceBase.java
@@ -32,7 +32,6 @@
 import android.hardware.biometrics.BiometricConstants;
 import android.hardware.biometrics.BiometricManager;
 import android.hardware.biometrics.BiometricsProtoEnums;
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.hardware.biometrics.IBiometricService;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.hardware.biometrics.IBiometricServiceReceiverInternal;
@@ -44,7 +43,6 @@
 import android.os.IBinder;
 import android.os.IHwBinder;
 import android.os.IRemoteCallback;
-import android.os.NativeHandle;
 import android.os.PowerManager;
 import android.os.Process;
 import android.os.RemoteException;
@@ -223,10 +221,9 @@
 
         public AuthenticationClientImpl(Context context, DaemonWrapper daemon, long halDeviceId,
                 IBinder token, ServiceListener listener, int targetUserId, int groupId, long opId,
-                boolean restricted, String owner, int cookie, boolean requireConfirmation,
-                IBiometricNativeHandle windowId) {
+                boolean restricted, String owner, int cookie, boolean requireConfirmation) {
             super(context, getConstants(), daemon, halDeviceId, token, listener, targetUserId,
-                    groupId, opId, restricted, owner, cookie, requireConfirmation, windowId);
+                    groupId, opId, restricted, owner, cookie, requireConfirmation);
         }
 
         @Override
@@ -287,10 +284,10 @@
         public EnrollClientImpl(Context context, DaemonWrapper daemon, long halDeviceId,
                 IBinder token, ServiceListener listener, int userId, int groupId,
                 byte[] cryptoToken, boolean restricted, String owner,
-                final int[] disabledFeatures, int timeoutSec, IBiometricNativeHandle windowId) {
+                final int[] disabledFeatures, int timeoutSec) {
             super(context, getConstants(), daemon, halDeviceId, token, listener,
                     userId, groupId, cryptoToken, restricted, owner, getBiometricUtils(),
-                    disabledFeatures, timeoutSec, windowId);
+                    disabledFeatures, timeoutSec);
         }
 
         @Override
@@ -476,13 +473,12 @@
      */
     protected interface DaemonWrapper {
         int ERROR_ESRCH = 3; // Likely HAL is dead. see errno.h.
-        int authenticate(long operationId, int groupId, NativeHandle windowId)
-                throws RemoteException;
+        int authenticate(long operationId, int groupId) throws RemoteException;
         int cancel() throws RemoteException;
         int remove(int groupId, int biometricId) throws RemoteException;
         int enumerate() throws RemoteException;
         int enroll(byte[] token, int groupId, int timeout,
-                ArrayList<Integer> disabledFeatures, NativeHandle windowId) throws RemoteException;
+                ArrayList<Integer> disabledFeatures) throws RemoteException;
         void resetLockout(byte[] token) throws RemoteException;
     }
 
diff --git a/services/core/java/com/android/server/biometrics/EnrollClient.java b/services/core/java/com/android/server/biometrics/EnrollClient.java
index 684795e..7ebb7c0 100644
--- a/services/core/java/com/android/server/biometrics/EnrollClient.java
+++ b/services/core/java/com/android/server/biometrics/EnrollClient.java
@@ -20,13 +20,10 @@
 import android.hardware.biometrics.BiometricAuthenticator;
 import android.hardware.biometrics.BiometricConstants;
 import android.hardware.biometrics.BiometricsProtoEnums;
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.os.IBinder;
-import android.os.NativeHandle;
 import android.os.RemoteException;
 import android.util.Slog;
 
-import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 
@@ -38,7 +35,6 @@
     private final BiometricUtils mBiometricUtils;
     private final int[] mDisabledFeatures;
     private final int mTimeoutSec;
-    private final NativeHandle mWindowId;
 
     private long mEnrollmentStartTimeMs;
 
@@ -48,26 +44,13 @@
             BiometricServiceBase.DaemonWrapper daemon, long halDeviceId, IBinder token,
             BiometricServiceBase.ServiceListener listener, int userId, int groupId,
             byte[] cryptoToken, boolean restricted, String owner, BiometricUtils utils,
-            final int[] disabledFeatures, int timeoutSec, IBiometricNativeHandle windowId) {
+            final int[] disabledFeatures, int timeoutSec) {
         super(context, constants, daemon, halDeviceId, token, listener, userId, groupId, restricted,
                 owner, 0 /* cookie */);
         mBiometricUtils = utils;
         mCryptoToken = Arrays.copyOf(cryptoToken, cryptoToken.length);
         mDisabledFeatures = Arrays.copyOf(disabledFeatures, disabledFeatures.length);
         mTimeoutSec = timeoutSec;
-        mWindowId = Utils.dupNativeHandle(windowId);
-    }
-
-    @Override
-    public void destroy() {
-        if (mWindowId != null && mWindowId.getFileDescriptors() != null) {
-            try {
-                mWindowId.close();
-            } catch (IOException e) {
-                Slog.e(getLogTag(), "Failed to close windowId NativeHandle: ", e);
-            }
-        }
-        super.destroy();
     }
 
     @Override
@@ -119,7 +102,7 @@
             }
 
             final int result = getDaemonWrapper().enroll(mCryptoToken, getGroupId(), mTimeoutSec,
-                    disabledFeatures, mWindowId);
+                    disabledFeatures);
             if (result != 0) {
                 Slog.w(getLogTag(), "startEnroll failed, result=" + result);
                 mMetricsLogger.histogram(mConstants.tagEnrollStartError(), result);
diff --git a/services/core/java/com/android/server/biometrics/Utils.java b/services/core/java/com/android/server/biometrics/Utils.java
index 3235499..14378da 100644
--- a/services/core/java/com/android/server/biometrics/Utils.java
+++ b/services/core/java/com/android/server/biometrics/Utils.java
@@ -23,17 +23,12 @@
 import android.hardware.biometrics.BiometricManager;
 import android.hardware.biometrics.BiometricPrompt;
 import android.hardware.biometrics.BiometricPrompt.AuthenticationResultType;
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.os.Build;
 import android.os.Bundle;
-import android.os.NativeHandle;
 import android.os.UserHandle;
 import android.provider.Settings;
 import android.util.Slog;
 
-import java.io.FileDescriptor;
-import java.io.IOException;
-
 public class Utils {
     public static boolean isDebugEnabled(Context context, int targetUserId) {
         if (targetUserId == UserHandle.USER_NULL) {
@@ -261,31 +256,4 @@
                 throw new IllegalArgumentException("Unsupported dismissal reason: " + reason);
         }
     }
-
-    /**
-     * Converts an {@link IBiometricNativeHandle} to a {@link NativeHandle} by duplicating the
-     * the underlying file descriptors.
-     *
-     * Both the original and new handle must be closed after use.
-     *
-     * @param h {@link IBiometricNativeHandle} received as a binder call argument. Usually used to
-     *          identify a WindowManager window. Can be null.
-     * @return A {@link NativeHandle} representation of {@code h}. Will be null if either {@code h}
-     *          or its contents are null.
-     */
-    public static NativeHandle dupNativeHandle(IBiometricNativeHandle h) {
-        NativeHandle handle = null;
-        if (h != null && h.fds != null && h.ints != null) {
-            FileDescriptor[] fds = new FileDescriptor[h.fds.length];
-            for (int i = 0; i < h.fds.length; ++i) {
-                try {
-                    fds[i] = h.fds[i].dup().getFileDescriptor();
-                } catch (IOException e) {
-                    return null;
-                }
-            }
-            handle = new NativeHandle(fds, h.ints, true /* own */);
-        }
-        return handle;
-    }
 }
diff --git a/services/core/java/com/android/server/biometrics/face/FaceService.java b/services/core/java/com/android/server/biometrics/face/FaceService.java
index f222f39..fd54129 100644
--- a/services/core/java/com/android/server/biometrics/face/FaceService.java
+++ b/services/core/java/com/android/server/biometrics/face/FaceService.java
@@ -34,7 +34,6 @@
 import android.hardware.biometrics.BiometricAuthenticator;
 import android.hardware.biometrics.BiometricConstants;
 import android.hardware.biometrics.BiometricsProtoEnums;
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.hardware.biometrics.IBiometricServiceReceiverInternal;
 import android.hardware.biometrics.face.V1_0.IBiometricsFace;
@@ -215,10 +214,9 @@
         public FaceAuthClient(Context context,
                 DaemonWrapper daemon, long halDeviceId, IBinder token,
                 ServiceListener listener, int targetUserId, int groupId, long opId,
-                boolean restricted, String owner, int cookie, boolean requireConfirmation,
-                IBiometricNativeHandle windowId) {
+                boolean restricted, String owner, int cookie, boolean requireConfirmation) {
             super(context, daemon, halDeviceId, token, listener, targetUserId, groupId, opId,
-                    restricted, owner, cookie, requireConfirmation, windowId);
+                    restricted, owner, cookie, requireConfirmation);
         }
 
         @Override
@@ -375,7 +373,7 @@
         @Override // Binder call
         public void enroll(int userId, final IBinder token, final byte[] cryptoToken,
                 final IFaceServiceReceiver receiver, final String opPackageName,
-                final int[] disabledFeatures, IBiometricNativeHandle windowId) {
+                final int[] disabledFeatures) {
             checkPermission(MANAGE_BIOMETRIC);
             updateActiveGroup(userId, opPackageName);
 
@@ -386,7 +384,7 @@
             final EnrollClientImpl client = new EnrollClientImpl(getContext(), mDaemonWrapper,
                     mHalDeviceId, token, new ServiceListenerImpl(receiver), mCurrentUserId,
                     0 /* groupId */, cryptoToken, restricted, opPackageName, disabledFeatures,
-                    ENROLL_TIMEOUT_SEC, windowId) {
+                    ENROLL_TIMEOUT_SEC) {
 
                 @Override
                 public int[] getAcquireIgnorelist() {
@@ -413,14 +411,6 @@
         }
 
         @Override // Binder call
-        public void enrollRemotely(int userId, final IBinder token, final byte[] cryptoToken,
-                final IFaceServiceReceiver receiver, final String opPackageName,
-                final int[] disabledFeatures) {
-            checkPermission(MANAGE_BIOMETRIC);
-            // TODO(b/145027036): Implement this.
-        }
-
-        @Override // Binder call
         public void cancelEnrollment(final IBinder token) {
             checkPermission(MANAGE_BIOMETRIC);
             cancelEnrollmentInternal(token);
@@ -436,7 +426,7 @@
             final AuthenticationClientImpl client = new FaceAuthClient(getContext(),
                     mDaemonWrapper, mHalDeviceId, token, new ServiceListenerImpl(receiver),
                     mCurrentUserId, 0 /* groupId */, opId, restricted, opPackageName,
-                    0 /* cookie */, false /* requireConfirmation */, null /* windowId */);
+                    0 /* cookie */, false /* requireConfirmation */);
             authenticateInternal(client, opId, opPackageName);
         }
 
@@ -452,7 +442,7 @@
                     mDaemonWrapper, mHalDeviceId, token,
                     new BiometricPromptServiceListenerImpl(wrapperReceiver),
                     mCurrentUserId, 0 /* groupId */, opId, restricted, opPackageName, cookie,
-                    requireConfirmation, null /* windowId */);
+                    requireConfirmation);
             authenticateInternal(client, opId, opPackageName, callingUid, callingPid,
                     callingUserId);
         }
@@ -986,8 +976,7 @@
      */
     private final DaemonWrapper mDaemonWrapper = new DaemonWrapper() {
         @Override
-        public int authenticate(long operationId, int groupId, NativeHandle windowId)
-                throws RemoteException {
+        public int authenticate(long operationId, int groupId) throws RemoteException {
             IBiometricsFace daemon = getFaceDaemon();
             if (daemon == null) {
                 Slog.w(TAG, "authenticate(): no face HAL!");
@@ -1028,7 +1017,7 @@
 
         @Override
         public int enroll(byte[] cryptoToken, int groupId, int timeout,
-                ArrayList<Integer> disabledFeatures, NativeHandle windowId) throws RemoteException {
+                ArrayList<Integer> disabledFeatures) throws RemoteException {
             IBiometricsFace daemon = getFaceDaemon();
             if (daemon == null) {
                 Slog.w(TAG, "enroll(): no face HAL!");
@@ -1038,17 +1027,7 @@
             for (int i = 0; i < cryptoToken.length; i++) {
                 token.add(cryptoToken[i]);
             }
-            android.hardware.biometrics.face.V1_1.IBiometricsFace daemon11 =
-                    android.hardware.biometrics.face.V1_1.IBiometricsFace.castFrom(
-                            daemon);
-            if (daemon11 != null) {
-                return daemon11.enroll_1_1(token, timeout, disabledFeatures, windowId);
-            } else if (windowId == null) {
-                return daemon.enroll(token, timeout, disabledFeatures);
-            } else {
-                Slog.e(TAG, "enroll(): windowId is only supported in @1.1 HAL");
-                return ERROR_ESRCH;
-            }
+            return daemon.enroll(token, timeout, disabledFeatures);
         }
 
         @Override
diff --git a/services/core/java/com/android/server/biometrics/fingerprint/FingerprintAuthenticator.java b/services/core/java/com/android/server/biometrics/fingerprint/FingerprintAuthenticator.java
index 5bbeef1..4604752 100644
--- a/services/core/java/com/android/server/biometrics/fingerprint/FingerprintAuthenticator.java
+++ b/services/core/java/com/android/server/biometrics/fingerprint/FingerprintAuthenticator.java
@@ -38,7 +38,7 @@
             String opPackageName, int cookie, int callingUid, int callingPid, int callingUserId)
             throws RemoteException {
         mFingerprintService.prepareForAuthentication(token, sessionId, userId, wrapperReceiver,
-                opPackageName, cookie, callingUid, callingPid, callingUserId, null /* windowId */);
+                opPackageName, cookie, callingUid, callingPid, callingUserId);
     }
 
     @Override
diff --git a/services/core/java/com/android/server/biometrics/fingerprint/FingerprintService.java b/services/core/java/com/android/server/biometrics/fingerprint/FingerprintService.java
index 4d55450..acb1a2f 100644
--- a/services/core/java/com/android/server/biometrics/fingerprint/FingerprintService.java
+++ b/services/core/java/com/android/server/biometrics/fingerprint/FingerprintService.java
@@ -38,7 +38,6 @@
 import android.hardware.biometrics.BiometricAuthenticator;
 import android.hardware.biometrics.BiometricConstants;
 import android.hardware.biometrics.BiometricsProtoEnums;
-import android.hardware.biometrics.IBiometricNativeHandle;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.hardware.biometrics.IBiometricServiceReceiverInternal;
 import android.hardware.biometrics.fingerprint.V2_1.IBiometricsFingerprint;
@@ -52,7 +51,6 @@
 import android.os.Build;
 import android.os.Environment;
 import android.os.IBinder;
-import android.os.NativeHandle;
 import android.os.RemoteException;
 import android.os.SELinux;
 import android.os.SystemClock;
@@ -135,9 +133,9 @@
                 DaemonWrapper daemon, long halDeviceId, IBinder token,
                 ServiceListener listener, int targetUserId, int groupId, long opId,
                 boolean restricted, String owner, int cookie,
-                boolean requireConfirmation, IBiometricNativeHandle windowId) {
+                boolean requireConfirmation) {
             super(context, daemon, halDeviceId, token, listener, targetUserId, groupId, opId,
-                    restricted, owner, cookie, requireConfirmation, windowId);
+                    restricted, owner, cookie, requireConfirmation);
         }
 
         @Override
@@ -201,7 +199,7 @@
         @Override // Binder call
         public void enroll(final IBinder token, final byte[] cryptoToken, final int userId,
                 final IFingerprintServiceReceiver receiver, final int flags,
-                final String opPackageName, IBiometricNativeHandle windowId) {
+                final String opPackageName) {
             checkPermission(MANAGE_FINGERPRINT);
 
             final boolean restricted = isRestricted();
@@ -209,7 +207,7 @@
             final EnrollClientImpl client = new EnrollClientImpl(getContext(), mDaemonWrapper,
                     mHalDeviceId, token, new ServiceListenerImpl(receiver), mCurrentUserId, groupId,
                     cryptoToken, restricted, opPackageName, new int[0] /* disabledFeatures */,
-                    ENROLL_TIMEOUT_SEC, windowId) {
+                    ENROLL_TIMEOUT_SEC) {
                 @Override
                 public boolean shouldVibrate() {
                     return true;
@@ -233,22 +231,20 @@
         @Override // Binder call
         public void authenticate(final IBinder token, final long opId, final int groupId,
                 final IFingerprintServiceReceiver receiver, final int flags,
-                final String opPackageName, IBiometricNativeHandle windowId) {
+                final String opPackageName) {
             updateActiveGroup(groupId, opPackageName);
             final boolean restricted = isRestricted();
             final AuthenticationClientImpl client = new FingerprintAuthClient(getContext(),
                     mDaemonWrapper, mHalDeviceId, token, new ServiceListenerImpl(receiver),
                     mCurrentUserId, groupId, opId, restricted, opPackageName,
-                    0 /* cookie */, false /* requireConfirmation */,
-                    windowId);
+                    0 /* cookie */, false /* requireConfirmation */);
             authenticateInternal(client, opId, opPackageName);
         }
 
         @Override // Binder call
         public void prepareForAuthentication(IBinder token, long opId, int groupId,
                 IBiometricServiceReceiverInternal wrapperReceiver, String opPackageName,
-                int cookie, int callingUid, int callingPid, int callingUserId,
-                IBiometricNativeHandle windowId) {
+                int cookie, int callingUid, int callingPid, int callingUserId) {
             checkPermission(MANAGE_BIOMETRIC);
             updateActiveGroup(groupId, opPackageName);
             final boolean restricted = true; // BiometricPrompt is always restricted
@@ -256,8 +252,7 @@
                     mDaemonWrapper, mHalDeviceId, token,
                     new BiometricPromptServiceListenerImpl(wrapperReceiver),
                     mCurrentUserId, groupId, opId, restricted, opPackageName, cookie,
-                    false /* requireConfirmation */,
-                    windowId);
+                    false /* requireConfirmation */);
             authenticateInternal(client, opId, opPackageName, callingUid, callingPid,
                     callingUserId);
         }
@@ -656,24 +651,13 @@
      */
     private final DaemonWrapper mDaemonWrapper = new DaemonWrapper() {
         @Override
-        public int authenticate(long operationId, int groupId, NativeHandle windowId)
-                throws RemoteException {
+        public int authenticate(long operationId, int groupId) throws RemoteException {
             IBiometricsFingerprint daemon = getFingerprintDaemon();
             if (daemon == null) {
                 Slog.w(TAG, "authenticate(): no fingerprint HAL!");
                 return ERROR_ESRCH;
             }
-            android.hardware.biometrics.fingerprint.V2_2.IBiometricsFingerprint daemon22 =
-                    android.hardware.biometrics.fingerprint.V2_2.IBiometricsFingerprint.castFrom(
-                            daemon);
-            if (daemon22 != null) {
-                return daemon22.authenticate_2_2(operationId, groupId, windowId);
-            } else if (windowId == null) {
-                return daemon.authenticate(operationId, groupId);
-            } else {
-                Slog.e(TAG, "authenticate(): windowId is only supported in @2.2 HAL");
-                return ERROR_ESRCH;
-            }
+            return daemon.authenticate(operationId, groupId);
         }
 
         @Override
@@ -708,27 +692,13 @@
 
         @Override
         public int enroll(byte[] cryptoToken, int groupId, int timeout,
-                ArrayList<Integer> disabledFeatures, NativeHandle windowId) throws RemoteException {
+                ArrayList<Integer> disabledFeatures) throws RemoteException {
             IBiometricsFingerprint daemon = getFingerprintDaemon();
             if (daemon == null) {
                 Slog.w(TAG, "enroll(): no fingerprint HAL!");
                 return ERROR_ESRCH;
             }
-            android.hardware.biometrics.fingerprint.V2_2.IBiometricsFingerprint daemon22 =
-                    android.hardware.biometrics.fingerprint.V2_2.IBiometricsFingerprint.castFrom(
-                            daemon);
-            if (daemon22 != null) {
-                ArrayList<Byte> cryptoTokenAsList = new ArrayList<>(cryptoToken.length);
-                for (byte b : cryptoToken) {
-                    cryptoTokenAsList.add(b);
-                }
-                return daemon22.enroll_2_2(cryptoTokenAsList, groupId, timeout, windowId);
-            } else if (windowId == null) {
-                return daemon.enroll(cryptoToken, groupId, timeout);
-            } else {
-                Slog.e(TAG, "enroll(): windowId is only supported in @2.2 HAL");
-                return ERROR_ESRCH;
-            }
+            return daemon.enroll(cryptoToken, groupId, timeout);
         }
 
         @Override