While expensive, these are one-time purchases. They are transferable, meaning if you upgrade your NAS in five years, you can move your licenses to the new hardware.

Attempting to use fraudulent keys can lead to your Synology Account being flagged or your NAS being barred from official updates and QuickConnect services. Why Keygens Don’t Work for Surveillance Station

Synology Surveillance Station comes with two free camera licenses by default (though some high-end NVR models include more). To add more cameras, you must purchase official license packs.