You could place a password on your zipped models. that way you can at least force people to go to your site to get the password from you personally by e-mail. And it might be possible to track down the IP-adresses of those people. And If you see your models on a site you might be able to check if it's one of the people who have been to your site for the password. And if those people haven't got the models from your site, you can contact them and ask them where they got he models and if nessecary you can take action against the people who provided the models illigally. Don't ask me how to do that though, because I don't know how to do that. But someone else might know.

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