diff --git a/utils.cc b/utils.cc
index 6ebffd0..6006eb8 100644
--- a/utils.cc
+++ b/utils.cc
@@ -37,6 +37,8 @@
 
 namespace utils {
 
+static const char kOOBECompletedMarker[] = "/home/chronos/.oobe_completed";
+
 bool IsOfficialBuild() {
   OmahaRequestDeviceParams params;
   if (!params.Init("", "")) {
@@ -46,6 +48,10 @@
       params.app_track != "developer-build";
 }
 
+bool IsOOBEComplete() {
+  return file_util::PathExists(FilePath(kOOBECompletedMarker));
+}
+
 bool WriteFile(const char* path, const char* data, int data_len) {
   DirectFileWriter writer;
   TEST_AND_RETURN_FALSE_ERRNO(0 == writer.Open(path,