Hey, I know this game!
  1. Buy authenticator for $6.50US.
  2. Attach to game(s).
  3. Carry around in pocket or on keychain.
  4. Post on forums you have a MOBILE authenticator (which you do!).
  5. ???
  6. PROFIT!

See? Even a caveman could do it. Hell, I bet trunk monkey could do it.