Security beyond hardware key

[jmirandav]

I have made a solution that uses a hardware key for protection against piracy. This configuration effectively protects the software of unautorized use, but prevents me from distribution (sales) of my solutions in other countries/cities because although the installation of the hardware key is relatively easy it couldn't be made but all the customers. So I would like to hear about other ways to protect my products.

Saludos!