There's nothing semi about it; there are a variety of legal "information" programs for consumers (and plenty of enterprise "fleet management" tools for businesses) that will extract that information. (Using that information to then make and distribute copies would be illegal, but that's another kettle of fish entirely). Two that I have on my USB key:
- keyfinder (less useful now that they're charging for this functionality for Win7)
- SIW.exe (under "Software" look for "Secrets") which finds all sorts of useful info
There are others, and maybe those solutions are getting dated (the latest versions of everything seem to no longer be free); I'm sure other folks here will chime in with their favorites.