Cookies for dummies

[dilbert]

Thanks, how can I tell when the cookie expires? Let's say two of my members use the same PC and the set Remember Me to unchecked. I want the non-vB pages to find the active cookie only.

So in my example above, I can clearly see the userid is 1.
How can I tell if the cookie is expired? Or does vB delete the cookie if Remember Me is not checked? Then in my example of more than 1 user, I should not be able to locate any cookie on the users PC, correct?

Yikes, I really have no idea what I am talking about, I hope this makes at least some sense.