If somebody buys CADLock SE, does this mean they can open all Locked (DWX) drawing files?
No! Not without the passkey! CADLock SE is no more capable of opening and editing DWX files than CADLock RT: the two products have identical capabilities when it comes to reading DWX files. The difference between the two is restricted to the creation of Locked files. CADLock RT cannot create truly secure drawings, because anyone with CADLock RT or SE can open them using the special password “DEMO”. CADLock SE can create truly secure drawings which cannot be opened except by people with the appropriate passkey.