diff --git a/libs/ui/PictureProfileHandle.cpp b/libs/ui/PictureProfileHandle.cpp
new file mode 100644
index 0000000..0701e90
--- /dev/null
+++ b/libs/ui/PictureProfileHandle.cpp
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+#include <ui/PictureProfileHandle.h>
+
+#include <format>
+
+namespace android {
+
+const PictureProfileHandle PictureProfileHandle::NONE(0);
+
+::std::string toString(const PictureProfileHandle& handle) {
+    return std::format("{:#010x}", handle.getId());
+}
+
+} // namespace android