dbus-send --print-reply --system --type=method_call --dest=com.nokia.system_ui /com/nokia/system_ui/request com.nokia.system_ui.request.devlock_open string:'com.nokia.mce' string:'/com/nokia/mce/request' string:'com.nokia.mce.request' string:'devlock_callback' uint32:3
dbus-send --system --type=method_call --dest=com.nokia.mce /com/nokia/mce/request com.nokia.mce.request.devlock_callback int32:2