They can't. But for the same reason they will have trouble and delays registering a legitimate copy. Someone above wrote about registering by sending CL a letter. A letter!? Snail mail!?!?!? I know all too well how long snail mail takes to get from Manchester (UK) to e.g. California and back. I fully understand and sympathize with Curious Labs's problems with warezing and such piracy and the need for the fight against warez; but there is a limit to sensible security without awakening the law of diminishing returns. It is the same with shops that double and triple check customers' identities before accepting a cheque. Please, keep the present system that Poser 4 has. Surely, if e.g. http://www.qwertyuiop.com or whatever starts offering warez, there must be some way to find where its server is physically and send the law in?