The iLok USB Hardware Key is a device that holds authorization keys and connects via the USB port to your computer. Since it is portable, you can move it from one computer to another without the need to authorize each individual computer you use. The iLok is supported by a number of audio software companies including Digidesign and Waves. So, if you use other software besides Max/MSP you may be able to use an iLok to hold authorizations for a lot of your software. The iLok is cross-platform, and in fact, your iLok need only be set up once to authorize both the Mac and PC versions of Max/MSP.
You can purchase an iLok from a limited number of retailers. Two we know of are Digidesign's on-line store and audiomidi. Cycling '74 does not sell iLoks.
Yes, you need any version between 4.3.2 and 8. You may only use iLok authorization if you own a full license. It is not available on subscriptions.
No. Any version of Jitter that runs with Max/MSP 4.3.2 can be authorized with the iLok.
Please confirm that the iLok Key is plugged into a working USB port and that the light on the iLok is on. For more information, see the support page in your iLok.com account home. If you need to replace a broken or defective iLok, you'll need to follow the RMA procedures outlined on ilok.com.