Suppose "A" Logged in to his Profile & "B" is into her in a Web App, in which there is a page "trace.aspx" . This page can fetch IP of visitor.
Now: "A" is sending this page to any one & getting the IP address, that should not be visible to "B".
How what should be sent with the page(pehaves Query string) so follwing database would be field with IP & a unique value that is"A" unique id too
Data Base: Trace(IP, ID)