You can authorize with Challenge/Response or iLok.

How to Obtain a Challenge/Response Authorization (Mac and Windows)
1. If you haven't already installed Pluggo, please do so before proceeding.
2. Launch the Authorize Pluggo application.
3. Click the Authorize button.
4. Uncheck "use my iLok smart key" and click next.
5. You'll then see a dialog box with a string of short words called a Challenge.
6. Copy the Challenge.
7. Paste it into the Challenge/Response Authorization Form, fill out the rest of the form, and submit it.
8. After processing your authorization, Cycling '74 will e-mail you a new string of short words called a Response.
9. Launch Authorize Pluggo again, click Authorize, and enter the Response in the dialog box below the Challenge string. Your software will then be permanently authorized on your hard disk.

Important Notes
* If your computer becomes deauthorized, the same Response may reauthorize it, even if the Challenge has changed. Please keep a record of your Response.
* If you have any problems with your authorization, please contact technical support.
* Cycling '74 will respond to two Challenge/Response requests. If you need additional authorizations, please include an explanation in the Comments field on the Challenge/Response Authorization Form.

How to Obtain an iLok Authorization (Mac and Windows)

If you choose to use an iLok and have an iLok account, go to the iLok Authorization Form. Enter the required iLok information. As soon as your iLok account has been verified, an asset will be deposited, and you will be notified. If you do not own an iLok and would like more information, please visit the iLok website.