Originally Posted by HarryT
You may perhaps misunderstand me. I'm not expecting to be able to find out who is using my software illegally. I simply want a practical method of being able to prosecute those whom I do catch (eg selling copies of my software on eBay - that's quite a common thing, sadly).
That would be commercial piracy, a criminal offence. Also an easy collar for lazy plod to add to their solved crime statistics.