## @file\r
-# Provides a secure platform-specific method to clear PK(Platform Key).\r
+# NULL PlatformSecureLib instance does NOT really detect whether a physical present \r
+# user exists but return TRUE directly. This instance can be used to verify security\r
+# related features during platform enabling and development. It should be replaced\r
+# by a platform-specific method(e.g. Button pressed) in a real platform for product.\r
#\r
# Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>\r
# This program and the accompanying materials\r