diff --git a/core/api/current.txt b/core/api/current.txt
index 50580554e1ec4..0a1d5904be6c0 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -31471,6 +31471,7 @@ package android.os {
     method public int dataPosition();
     method public int dataSize();
     method public void enforceInterface(@NonNull String);
+    method public void enforceNoDataAvail();
     method public boolean hasFileDescriptors();
     method public boolean hasFileDescriptors(int, int);
     method public byte[] marshall();
diff --git a/core/java/android/os/Parcel.java b/core/java/android/os/Parcel.java
index 36645155a4723..3661ee0884b79 100644
--- a/core/java/android/os/Parcel.java
+++ b/core/java/android/os/Parcel.java
@@ -845,6 +845,19 @@ public final class Parcel {
         nativeEnforceInterface(mNativePtr, interfaceName);
     }
 
+    /**
+     * Verify there are no bytes left to be read on the Parcel.
+     *
+     * @throws BadParcelableException If the current position hasn't reached the end of the Parcel.
+     * When used over binder, this exception should propagate to the caller.
+     */
+    public void enforceNoDataAvail() {
+        final int n = dataAvail();
+        if (n > 0) {
+            throw new BadParcelableException("Parcel data not fully consumed, unread size: " + n);
+        }
+    }
+
     /**
      * Writes the work source uid to the request headers.
      *