Google is trying hard to get businesses and end users to migrate from productivity suites like Microsoft Office which are tied to a specific machine and move to cloud-based offerings like Google Docs. So far, Google claims that 3 million businesses have made the move to Google Docs.

In an effort to make Google Docs more secure, Google has unveiled a new security feature for access to the service. In the Google Apps Premiere, Education, and Government editions, the administrator can now force end-users to sign in using a combination of their password and a verification code provided on a mobile phone. This combination allows the two-step verification process using something the user knows and something the user has.

The idea is to make the service more secure by limiting the ability of phishing scams and hacks that might steal a password from a user unable to access the account unless they also have the users phone to get the one time security code. Google states that the new system allows this sort of protection for the first time without expensive hardware and complex rollouts on the businesses side.

Google also states that the two-step verification process will be rolled out to Standard Edition users and hundreds of millions of other users in the coming months.

In addition to the new verification process, Google is also showing off new mobile editing for Google Docs from the Android platform and from the iPad. The addition of editing for mobile users on Android or the iPad will extend the number of devices that can access remotely.

Google docs allows as many as 50 users to work on a single document and make changes at the same time. Google makes extensive use of HTML5 for the software.