Gmail’s account activity is a very useful security feature that offers information about the clients that connected to your email account recently, including the IP addresses and the date.
Until now, Google only displayed generic information about the access type (browser, mobile, POP3). A recent updated added some new details: the browser’s name and the user agent. If you click “show details”, you can find more information from the user agent: the browser’s version and the operating system. Obviously, the browser’s user agent can be easily spoofed.
{ Thanks, Herin. }