GIS is specifically designed to be good at finding similar images so it's going to work great for your test case. Facial recognition algorithms are solving a di

GIS is specifically designed to be good at finding similar images so it's going to work great for your test case. Facial recognition algorithms are solving a different problem. If they were promising that cloaking would work well on GIS, that'd be a different matter. I can imagine wanting your images to not show up on GIS (because people would use them to try and find the source image on your profile, or something) but it's a different set of constraints at that point. For cloaking a big use case would be "I took a selfie with a friend and want to share it on my instagram" and your goal is for that instagram selfie to not automatically connect with, for example, a surveillance photo of you at a protest. GIS is obviously not relevant to that scenario.