diff --git a/hardware.cc b/hardware.cc
index f094d97..5d5492f 100644
--- a/hardware.cc
+++ b/hardware.cc
@@ -27,6 +27,12 @@
 using std::string;
 using std::vector;
 
+namespace {
+
+static const char kOOBECompletedMarker[] = "/home/chronos/.oobe_completed";
+
+}  // namespace
+
 namespace chromeos_update_engine {
 
 Hardware::Hardware() {}
@@ -145,6 +151,21 @@
   return !dev_mode;
 }
 
+bool Hardware::IsOOBEComplete(base::Time* out_time_of_oobe) const {
+  struct stat statbuf;
+  if (stat(kOOBECompletedMarker, &statbuf) != 0) {
+    if (errno != ENOENT) {
+      PLOG(ERROR) << "Error getting information about "
+                  << kOOBECompletedMarker;
+    }
+    return false;
+  }
+
+  if (out_time_of_oobe != nullptr)
+    *out_time_of_oobe = base::Time::FromTimeT(statbuf.st_mtime);
+  return true;
+}
+
 static string ReadValueFromCrosSystem(const string& key) {
   char value_buffer[VB_MAX_STRING_PROPERTY];