With Reason 7 and Reason Essentials 2, you can add your Reason, Reason Essentials and Rack Extension licenses to a single computer, for offline use. To authorize your computer, click “Authorize Computer and Keys” on Your Account.
This will list all your available authorizing options. Click the Authorize button next to the computer icon to add licenses to your computer.
Please note that you will need to have installed and run Reason 7 in order for the Authorizer to launch correctly.