Gmail has added a nice feature which shows which ip has accessed the mails

Today i came to know about a new feature in gmail.It basically display the ip address from which your email account has been accessed.you can see it in the bottom.
like this:
Last account activity: 5 minutes ago at this IP x.x.x.x

there is also a link to details.on clicking on it,it will display another window and will give you a option to delete all the sessions.it will help you to secure you account.suppoes you have logged in from office and forgot to signin and if you are afraid that someone might misuse your computer then simplay click on that button and you are done.
cool,yeah!!