The Steam Guard system (which uses identity tech
to warn you when anyone tries to log in to your Steam account from a different computer) is now available for all users
, according to the official website. Previously, it was only being tested by certain users (including Gabe Newell, who even posted his password online
during GDC), but now anyone with a Steam account can give it a try.
To use the service, you just need to update Steam to the latest version, make sure you have a verified email
associated with your account, then just restart Steam. Then, any time you log in from a new computer, Steam will send an email with a code that you'll need to enter to use the service. If you get an email for a computer you didn't log in from, someone else is trying to access your account. Pretty easy -- now no one will be able to play with your Torchlight
characters but you.