"Security is always a cause for concern, whether it be with online banking or simply ordering a Domino's pizza. Passwords used online for applications or services are no different, especially with the amount of cyber crime occuring since the boom of the world wide web. Google have published an article on their blog outlining recent attacks being made on Gmail accounts and how users can protect themselves further."
While the video only mentions a few mobile OS's by name, you should also be able to use this on other OS's like Windows Phone. You just won't have the ability to use the Google Authenticator App at this time.