Now an equivalent one-time passcode mobile app is available as a free open source app: http://code.google.com/p/google-authenticator/ http://code.google.com/p/g

Now an equivalent one-time passcode mobile app is available as a free open source app: http://code.google.com/p/google-authenticator/ http://code.google.com/p/google-authenticator/ (Disclaimer: This was my project at Google.)