PASTEBIN; holy shit

::pin_enter::
print("Please enter the correct PIN to unlock door.") -- Display text.
local inputvar = term.read()
term.write("pin| '"..pin.."', input='"..inputvar.."'")
if inputvar == pin then -- If input is equal to the PIN, goto "correct"
  goto correct
else
  print("Incorrect.") -- Display text.
  goto pin_enter -- Goto "pin_enter"
end
::correct::
print("Correct.")