scanner = peripheral.wrap("right")
rednet.open("left")
redstone.setOutput("top", true)
local sec = true

function secureLevel()
  local secLevel = 0
  print("sec start")
  rednet.send(3, "popcorn9499")
  local id, msg, dist = rednet.receive(5)
  print("sec end")
  secLevel = msg
  checkSec()
end

function checkSec()
   print("check start")
   if secLevel ~= nil and secLevel ~= 0 then
     print("access Granted")
     sec = false
     openDoor()
    else
     print("access denied")
     sec = true
   end
   print ("check end")
end

function openDoor()
  redstone.setOutput("top", false)

  sleep(1)
  print(sec)
  if sec == true then
    redstone.setOutput("top", true)
  end
end

function scan()
  local players = scanner.getPlayerNames()
  for a,b in pairs(players) do
     data = scanner.getPlayerData(b)
     local x = math.abs(data["position"]["x"])
     local z = math.abs(data["position"]["z"])
     if z < 2 and x < 2 then
       print (b..";"..x..":"..z)
       secureLevel()
     end
  end
end



while true do
  local sec = true
  local secLevel = 0
  local players =

  scan()
  --print("done")
end