Plug-ins are one of the elements that make Pro Tools so versatile, and since Digidesign opened their TDM, RTAS and Audiosuite protocols up to third-party developers, we now have an enormous range to choose from. However, plug-ins have always been susceptible to unauthorised copying, and software manufacturers and developers have felt the need to protect their investments by copy-protecting them. An iLok is a small key-shaped ‘dongle’ which you can plug into any USB port on a computer. The plug-in software checks for its presence, and if the iLok is detected and contains the correct authorisation, permits you to use that plug-in on that system. Take the iLok away and the software is no longer authorised and won’t function. This makes the iLok a very valuable item as, in effect, it is worth the combined value of all the software plug-ins that are authorised on it — and each iLok can store up to 100 authorisations. It is also small, which makes it very easy to lose or steal. To assist software manufacturers and developers, PACE set up a ‘central clearing house’ and management web site called iLok.com (below). This site enables the manufacturers and developers (who PACE call Vendors) to ‘deposit’ licences (sometimes called ‘assets’) into users’ accounts. The user is then able to download these onto their iLok. The web site also enables users to ‘synchronise’ their iLoks with ilok.com for users to upload licence details from the licence cards that some Vendors supply, for example, with retail products. In the next part we will look at what you can do on iLok.com