--Title: TangentLock
--Version: Ver. 4
--Last Revised: 1/6/2012
--Last Revised By: TangentDelta (alias Hydrogen)
--Author: TangentDelta (alias Hydrogen)
--Platform: ComputerCraft LUA Virtual Machine
--Notes: Please don't claim this as your own, give me credit if you use this!

right = "elivion"
debug = "debug"
outputface = "right"
protectmode = true
protectside = "left"
opentime = 5
maxtries = 3
tries = 0
hint = "for debugging purposes"
function TangentLock()
password()
if user == debug then
 print "Leaving SecureLock. Entering CraftOS"
 shell.run"shell"
end
if user == right then
 print "Password Correct"
 correct()
end
if user == "credits" then
 print "TangentLock Version 4.0"
 print "A program by TangentDelta"
 sleep(10)
 TangentLock()
end
if user == "hint" then
 print (hint)
 sleep(5)
end
if not(user == right) or (user == debug) or (user == "credits") or (user == "hint") then
 if tries == maxtries -1 then
  if protectmode then
   protect()
    else
   print "Too Many Wrong Tries"
   print "Shutting Down Now"
   sleep (3)
   os.shutdown()
  end
   else
  print "Incorrect Password."
  tries = tries+1
  print ("Tries Left: ", maxtries - tries)
  sleep(5)
  TangentLock()
 end
end
end
function correct()
 sleep(1)
 shell.run("clear")
 rs.setOutput(outputface, true)
 sleep(opentime)
 rs.setOutput(outputface, false)
 os.shutdown()
end
function protect()
 rs.setOutput(protectside, true)
 sleep(1)
 rs.setOutput(protectside, false)
 os.shutdown()
end
function password()
 shell.run("clear")
 print ("SecureLock 4.0 Running On Computer ", os.getComputerID())
 write "Password: "
 user=io.read()
end
TangentLock()