ProductKey stores the activation codes of operating systems and software that you purchased. It also allows you to create categories, store the product key by giving name, processor architecture and date of activation. The product keys are stored securely and encrypted in the memory of your computer.
ProductKey also allows you to make a backup of your product keys on Microsoft's secure servers, and synchronize them between your devices with Windows 8 and Windows Phone 8.
You can also set a password for application startup.