Prevent account sharing/fraud / collect users IPs

[Jeff_Hager]

This had been discussed here:

App Security Loophole - How to stop users from sharing login info

I’m trying to figure out if there’s a way to add an additional layer of security to apps. I’ve built an app that has free content and VIP content that comes at an added cost. While playing with the app last night, a buddy and I figured out that if one VIP user chooses to share his app credentials (email address + pin code), the VIP user AND anyone else can access VIP content at the same time. Here’s how I have things set up and how we discovered the loophole in the system: Users purchases VIP …