The software itself checks the entered 15-digit registration code and username.
The code is verified against an online registration server to prevent unauthorized use.
There are several ways to ensure your activation key file is verified and the software is fully registered:
Once both are successful, the software creates a local HDSentinel.key file (usually located in the HDSData folder) that stores your activation status. Methods to Verify Activation
Hard Disk Sentinel typically requires two levels of verification for full activation:
Your chosen username is displayed in the "About" box as the registered user.