Battlestation: Harbinger Piracy Rate

This is a great game, but that piracy rate is almost expected for the mobile (specially android) market. I'm a developer as well, and even after my game going free (2 years after launch), most of the downloads still comes from "unknown sources". I'm not saying launching games for android is a bad idea, but you have to plan ahead and know that 70% of the people is going to download a pirate version. Of course that's bad and I would rather live in a world where people actually support the game they are playing, but that's not the reality in most cases right now.

The thing here is: is there something you guys can do in your end to protect the game better? Maybe some sort of one-time login required to play the game once you download it?

Good luck guys. I really hope this situation changes soon.