startup

local rfid = peripheral.wrap("back")
rednet.open("top")
while true do
  if not rfid.isScanning() then
    rfid.scan(5)
  end
  local event,pass, = os.pullEvent()
  if event == "rfid_detected" and pass == "test" then
    rednet.send(25,"dorothy")
    sleep(10)
    redstone.setOutput("right",true)
    sleep(3)
    redstone.setOutput("right",false)
  end
  senderId,msg,protocol = rednet.receive(10)
  if msg == "dorothy" then
    redstone.setOutput("right",true)
    sleep(3)
    redstone.setOutput("right",false)
  end
end