pass

os.pullEvent() = os.pullEventRaw()

local pass = "password"

while true do -- infinite loop
  term.clear() -- clear the screen
  term.setCursorPos(1,1)
  print("SecurityOS Access Terminal")
  sleep(2)
  print("Authentication Required")
  write("Password> ")
  local input = read("*")
  if input == pass then -- if the password is correct
    shell.run("door")
    break -- break the loop, end the program
  else -- if it's not
    print("Password Incorrect") -- say it's wrong
    sleep(1) -- wait some time and then start over (because of the loop)
  end
end