Again, this is subject to correction if I find I am mistaken (I do not beleve I am, but the disclaimer stands): 1) Should not matter. For example, I would register as, for example, "Anthony Hernandez,

, , Serial number XF41-123456-ABC". The next I need to authorize, I simply say "Anthony Hernandez, XF41-123456-ABC", give my new address/email if need be, and that's it. 2) See #1. 3) I am not sure what form of contact is required. 4) Unless greatly mistaken, you can use the same Challenge/Response code three times. The security increments each time you need to reenter your response code. And, since each Response Code is tied to a unique Challenge Code, you cannot use someone else's codes. Once you have used a challenge code 3 times and need to use it again, we simply add a new authorization. I am not 100% sure what that process is yet and will update as I get that info. Anthony