http://www.digitaljournal.com/article/257127
Posted Jul 8, 2008 by Chris V. Thangham

Google Shows Who Has Access to Your Gmail Account


Photo by rovlls
Google's GMail service is a free email service with large storage capacity.
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Gmail can be accessed anywhere and because of this anytime access, we may log in from different places but forget to log ourselves out. Google has added a great privacy tool for Gmail: you can monitor all the places where you are logged in and if you want to sign off from those locations you can easily do it remotely.

This feature doesn't appear in Gmail yet, but it will be available to everyone shortly. When it is available, the feature will show just below your Gmail account page:



If you are logged in to more than one locations, then it will show that your Gmail account is open in those sites. To make sure those locations are yours, just click the "Details" button and you will see the IP (Internet Protocol) address. Every computer has a unique IP address so you will know whether it is yours or someone else. If it is someone else you can easily disable that location as shown below:

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Gmail shows various logged in sessions
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The table under "Concurrent session information" will show all your open Gmail sessions, along with IP address and "access type" (whether Gmail is open in iGoogle, POP3, mobile phone etc.). The table under "Recent activity" will show the recent history along with times of access. You can also view your current IP address at the bottom of the window.

All this information will help you to see that you are the only one using all these different Gmail sessions; if not you can protect yourself easily by logging them off. And if you feel that you are hacked, the best thing to do is change the password immediately.