local side = "left" -- Change this if you want to have to door/wire on a different side
local password = "Password" -- Change this to your preferred password
local input = ""

term.clear()
term.setCursorPos(1, 1)
term.write("Password: ")
input = read("*")   -- The asterisk will replace any character that the user type,
                    -- so passwords look realistic, if you dont want that, just
                    -- delete the asterisk

term.clear()
term.setCursorPos(1, 1)

if input == password then
    term.write("Access Granted") -- Change to your personalised message
    redstone.setOutput(side, true)
    sleep(5) -- Time that the door will remain open
    redstone.setOutput(side, false)
    os.shutdown() -- Computer will shutdown until next user wants to access
else
    term.write("Access Denied")
    sleep(3)
    os.shutdown()
end