[Avid]

http://www.digidesign.com/support/ilok/

iLok and Pro Tools 6 Q & A

Q: Do you need to have an iLok to use Pro Tools 6?
A: Not to use the Pro Tools application and the included DigiRack plug-ins. You only need an iLok to authorize optional Digidesign and Digidesign-distributed Development Partner plug-ins and software options on Pro Tools TDM and LE systems running 6 software. Check with third-party developers for their Mac OS X authorization method. (floppy authorizations will not work on Mac OS X, regardless of manufacturer)