Hardware Id is a unique identifier of your personal computer or laptop among all other machines calculated for copy protection. The Licensing system can verify on what machine a user run the software.

We use our own Licensing system and our proprietary Hardware Ids. We don't use Ninja's machine ID. To calculate Hardware Id we use motherboard Id, CPU(s) Id, and serial number of your 1st physical drive (drive #0). Changing motherboard, CPU or 1st physical drive will cause a license checking error.
The Hardware Id of your machine is stored on our server at the moment of activation (when you entered the license key and clicked Activate).