Advanced Password Program

-- AdvancedPasswordProgram

os.pullEvent = os.pullEventRaw

print ("Please enter password: ")
local password = io.read()

lettersTyped = {}

event, character = os.pullEvent("char")
event, scancode = os.pullEvent("key")

position = 1
repeat
if character ~= "" then
table.insert(lettersTyped, position, character)
print ("*")
position = position + 1
until scancode == "28"

if lettersTyped[1] == "4"
and lettersTyped[2] == "9"
and lettersTyped[3] == "e"
and lettersTyped[4] == "7"
and lettersTyped[5] == "F"
and lettersTyped[6] == "r"
and lettersTyped[7] == "y"
and lettersTyped[8] == "O" then
rs.setOutput("left", true)
sleep(2)
rs.setOutput("left", false)
end