diff --git a/common/java/com/android/common/speech/Recognition.java b/common/java/com/android/common/speech/Recognition.java
new file mode 100644
index 0000000..6f164a9
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+++ b/common/java/com/android/common/speech/Recognition.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2010 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.common.speech;
+
+/**
+ * Utilities for voice recognition implementations.
+ *
+ * @see android.app.RecognitionService
+ */
+public class Recognition {
+
+    /**
+     * The extra key used in an intent to the speech recognizer for voice search. Not
+     * generally to be used by developers. The system search dialog uses this, for example,
+     * to set a calling package for identification by a voice search API. If this extra
+     * is set by anyone but the system process, it should be overridden by the voice search
+     * implementation.
+     */
+    public final static String EXTRA_CALLING_PACKAGE = "calling_package";
+
+    private Recognition() { }   // don't instantiate
+}