They're (more than likely - almost certainly) using proprietary image fingerprinting techniques. If you had access to the original implementation, you could pr

They're (more than likely - almost certainly) using proprietary image fingerprinting techniques. If you had access to the original implementation, you could probably defeat them permanently with minimal alteration via reverse engineering. Which is why you don't have access to the original software, its specifications, or implementation details. (https://twitter.com/alexstamos/status/928646228472078336 https://twitter.com/alexstamos/status/928646228472078336)