diff --git a/README.txt b/README.txt
index de1718b..f4eb4b3 100644
--- a/README.txt
+++ b/README.txt
@@ -21,6 +21,7 @@ cat > /home/pi/.config/lxsession/LXDE/autostart <<"EOF"
 @./doorbuzz/buzzctrl.sh
 @./doorbuzz/videoplayer.sh
 @sudo python ./doorbuzz/shutdownbutton.py
+@./doorbuzz/phone_notification_client.sh
 EOF
 
 
@@ -34,6 +35,9 @@ you can add videos and they will be taken into account automatically
 when booting, the button led uses morsecode to send the low byte of the 
 IP adress in decimal
 
+phone_notification_client.sh communicates with pidor's doorbuzz_wrapper.sh
+to command the flash light
+
 todo
 ====
 create a config file
diff --git a/phone_notification_client.sh b/phone_notification_client.sh
new file mode 100755
index 0000000..4265739
--- /dev/null
+++ b/phone_notification_client.sh
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+url=http://10.2.113.137
+run_file="/var/run/phone_ringing_status"
+pidor=root@10.2.113.2
+old_status=0
+new_status=0
+while true # empty pipe
+do
+  sleep 1
+  while true
+  do 
+    read -t 1 status <&"${COPROC[0]}"
+    ret=$?
+    if [ $ret -eq 1 ]  # no more coprocess
+    then
+      echo "connecting to pidor"
+      coproc ssh -i ~/.ssh/doorbuzz $pidor
+      sleep 10
+      echo "connected"
+      echo "flashoff" >&"${COPROC[1]}"
+      ret=0
+    fi
+    if [ $ret -ne 0 ] 
+    then
+      break
+    fi
+    echo "$status"
+  done
+  echo "spacestatus" >&"${COPROC[1]}"
+  read status <&"${COPROC[0]}"
+  if ! [ "$status" = "open" ]; then   # do nothing if space is closed
+	continue
+  else
+#    if ! [ -e "$run_file" ]; then
+#        touch $run_file
+#    fi
+
+    curl -q "$url" 2>/dev/null | grep Ringing
+    new_status=$?
+#    old_status=$(cat ${run_file})
+
+    if [ "$new_status" -eq "$old_status" ]; then
+        continue
+    fi
+    echo "phone status change detected"
+    if [ "$new_status" -eq 0 ]; then
+      echo "flashon" >&"${COPROC[1]}"
+    else
+      echo "flashoff" >&"${COPROC[1]}"
+    fi
+#    echo $new_status > ${run_file}
+    old_status=$new_status
+  fi
+done