When X-RiteColor Master is installed, it is licensed and activated during the registration process. Both its serial number and AUI (Application Unique Identifier) are stored in X-Rite's registration database. The same AUI may not be installed on additional machines!
In the event of a hard drive failure or if the customer elects to move the software to a different PC, X-Rite must be contacted. A Customer Success agent can release the AUI so that it may be reused. The Customer Success agent will search existing database entries and if no pattern of fraud is detected, will be happy to re-enable your AUI so that your software may be re-registered.