Index: /trunk/doc/manual/en_US/user_VBoxManage.xml
===================================================================
--- /trunk/doc/manual/en_US/user_VBoxManage.xml	(revision 40724)
+++ /trunk/doc/manual/en_US/user_VBoxManage.xml	(revision 40725)
@@ -1072,5 +1072,6 @@
             given, then the teleporting request will only succeed if the
             source machine specifies the same password as the one specified
-            in the file give with this command.</para>
+            in the file give with this command. Use <computeroutput>stdin</computeroutput>
+            to read the password from stdin.</para>
           </listitem>
 
Index: /trunk/src/VBox/Frontends/VBoxManage/VBoxManageHelp.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VBoxManage/VBoxManageHelp.cpp	(revision 40724)
+++ /trunk/src/VBox/Frontends/VBoxManage/VBoxManageHelp.cpp	(revision 40725)
@@ -321,5 +321,5 @@
                      "                            [--teleporteraddress <address|empty>\n"
                      "                            [--teleporterpassword <password>]\n"
-                     "                            [--teleporterpasswordfrom  <file>|-]\n"
+                     "                            [--teleporterpasswordfrom  <file>|stdin]\n"
                      "                            [--tracing-enabled on|off]\n"
                      "                            [--tracing-config <config-string>]\n"
Index: /trunk/src/VBox/Frontends/VBoxManage/VBoxManageModifyVM.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VBoxManage/VBoxManageModifyVM.cpp	(revision 40724)
+++ /trunk/src/VBox/Frontends/VBoxManage/VBoxManageModifyVM.cpp	(revision 40725)
@@ -2219,5 +2219,5 @@
                 char szPasswd[512];
                 int vrc = VINF_SUCCESS;
-                bool fStdIn = !strcmp(ValueUnion.psz, "-");
+                bool fStdIn = !strcmp(ValueUnion.psz, "stdin");
                 PRTSTREAM pStrm;
                 if (!fStdIn)