The problem with that is that if the OS is removed, the registry is removed losing the nodeserial. If the Hard Disk is formatted, the nodeserial is lost. This method also allows the .exe file to be redistributed. Is there a way to take this hashed nodeserial and make it static in the .exe file once the file is on the users computer? Or another way to go about achieving the desired result?

How do I node lock the program? I am not familiar with this and cannot find anything googling. Could you point me in the right direction?

I am creating a program that will be sold as a subscription. I am trying to decide how to prevent users from passing the program to others without purchasing it. I was thinking that on the very first run, the program could pull the MAC address from the computer it is run on, and create a constant at run time. This constant is then hard wired into the program and is used for comparison every time the program is run thereafter. If the MAC address...