Reddits suggested replacement for the 3 step system.
Apparently over 50 million people used Pokevision when it was still active, that is more than half of the 80 million user base of pokemon go. It speaks to how badly the current game is on its own. Niantic needs to really fix tracking otherwise they will lose a large chunk of their user base eventually.
Pokevision creator points this out in his open letter to niantic.
http://kotaku.com/pokevision-creator...abo-1784733187