Cytomic plugins use an authorisation file based copy protection system. For computers connected to the internet you can authorise directly from within the plugin. For other computers you can download an authorisation file from your Cytomic account, once you have entered a machine id.
Each license automatically gets three authorisations per year, but it is easy to request a extra one if you need more, just let support know the circumstances and we’ll help out. Once a machine is authorised there is no way to un-authorise it securely, which is why three authorisations are provided per year per license.