os.pullEvent = os.pullEventRaw
local password = "1234"

while true do
   term.clear()
   term.setCursorPos(1, 1)
   print("Terminal locked")
   write("Please enter password: ")
   local input = read("*")
   if input == password then
      break
   else
      print("Incorrect password.")
      sleep(1)
   end
end