Gmail has a service that checks if a login is made from a geographically different location by checking the IP address of the user. Google has extended this feature to all its services and is providing them by default. The Google public policy blog unveils this feature saying,
A few months back we launched a feature in Gmail that notifies you when our servers automatically detect suspicious log in activity on your account. Since this has been effective in helping people identify improper access, we decided to extend it to all our Google Account users, not just Gmail.
Now, if a suspicious login takes place at any of the Google service, a warning will be displayed on your Google account dashboard. The same page has an option to change your password immediately. However, many users have opinionated that the feature should display messages right into Google services instead of displaying it on a separate dashboard page.
Another feature that was added was a reporting system that could report for problems in the dashboard. This will go a long way in keeping Google users secure. Given the number of hack attempts Google accounts have been having, this will go a long way in keeping Google users secure.