A process would have to install the "cracked key", so a script can't just be distributed which "uses it".
Logically such a script would check if mIRC is registered already first (legitimately) before hacking the registry to install their own. Such an identifier would only serve to streamline that effort and nothing else. Well no, it would also encourage people to be inventive and script ways to extract a user's registration info so they can find their real name (with relative ease). Such a function would definitely be in my remote-control trojan suite.
fin.
