RFID Door Lock

--REFID Door with automatic card creation

--configuration
writer = peripheral.wrap("rfid writer_0");
reader = peripheral.wrap("rfid reader_0");
redside = "back";

label = "GateKey";
data = "This is the gate key";
range = 5;

print("Simple in-secure RFID door!");
print("Key name: " .. label);
print("Scanning Range " .. range);

function main()
while true do
  --If there is a card in the writer
  -- and it is blank
  -- and we are not currently writing
  if writer.isPresent() and (not writer.isCoded())
    --make a key
     then writer.encode(data,label);
  end
  redstone.setOutput(redside,readerloop());
  os.sleep(.5); --let the redstone settle
  os.queueEvent("marker_event"); --clear the event
  repeat
    e = os.pullEvent();
  until e == "marker_event";
end
end