When you launch DJUCED without any controller connected, you have 3 choices:
1- Connect a supported controller to unlock all DJUCED features.
The internal identity of your controller operates as a Serial Key and unlocks everything.
This system allows you to connect your controller to any computer with DJUCED installed on it.
2- Offline Mode allows you to play or prepare some songs and playlists with limited mixing features, with your Keyboard and mouse.
3- Unlock mode asks for a Serial Key.
This mode is actually for Internal, Journalists, and future purposes.
For now, the only way to unlock all DJUCED features is to connect a compatible controller.