Question Which copy protection method is used for authorizing LM2/ LM6 Answer To use LM2/ LM6, you will need to have an iLok2 USB key and an active iLok account. The iLok or InterLok is a copy protection method developed and manufactured by PACE Anti-Piracy which utilizes a USB dongle and an online registration system. It enables a licensed user of a software application to use the software on different computers without having to acquire an authorization for each individual computer.