CC: Keycard access #1

--[[
Computer at the door.
Requires:
  Computer
  Monitor on top, 2 wide
  Disk drive behind
  Optional hopper
Name 'startup' and reboot computer.
]]--

mon = peripheral.wrap('monitor_1')
mon.clear()
mon.setCursorPos(1,1)
if fs.exists('disk/password') then
  mon.write('Access Granted')
  disk.eject('right')
  redstone.setOutput('left', true)
elseif fs.isDir('disk') then
  mon.write('Access Denied')
  disk.eject('right')
end
sleep(4)
redstone.setOutput('left', false)
mon.clear()
os.reboot()