iZotope products support four methods of authorization: Online, iLok, Challenge/Response (Offline), and our iZotope Product Portal application. The method that will be best for you is based on your preferences and also the machine(s) on which you want to install your iZotope products.
If your computer is not connected to the internet we offer a Challenge/Response authorization method. For this process, a challenge code is provided by the software on the desired machine after you perform the installation. This challenge code must then be submitted to our website via another web-connected device. A response file is then provided that you can use to authorize the offline machine.