dbus-send --system --type=method_call --dest=com.nokia.mce /com/nokia/mce/request com.nokia.mce.request.req_tklock_mode_change string:"locked"
signal sender=:1.9 -> dest=(null destination) serial=342 path=/com/nokia/mce/signal; interface=com.nokia.mce.signal; member=tklock_mode_ind string "locked"
dbus-send --system --type=method_call --print-reply --dest=com.nokia.mce /com/nokia/mce/ string:"com.nokia.mce.signal.tklock_mode_ind"