Please, allow me to argue:
Does it makes sense to take the time and effort to do such a thing now? Or is it better to concentrate to build a better game?
Pierce point is important. However, you might be spending precious time in a feature that in the end, if the game doesn't takes off, it might be an overkill.
I would concentrate on the game itself trying to be fun, interesting, challenging or whatever, instead of thinking how people might try to hack it.
That's just me.
Your question reminds me the challenge Microsoft had with piracy in China, which in the end Bill Gates (and Microsoft) decided:
If people are going to pirate software, might as well be mine.