Photo editing app Lensa grew massively popular over the last week as social media has become flooded with people posting AI-generated selfies from the app’s latest feature.But, before you slam the purchase button, a word of warning: Lensa’s privacy policy and terms of use stipulate that the images users submit to generate their selfies, or rather the “Face Data,” can be used by Prisma AI, the company behind Lensa, to further train the AI’s neural network.An artificial neural network like the one used by Lensa, or the popular text-to-image generator Dall-E 2, studies vast quantitites of data to learn how to create better and better results.This face data, which includes position, orientation, and face topology, is harvested using Apple’s TrueDepth API — the same face-tracking capabilities that allow iPhone users to unlock their phones with their face just by looking at their screen.In the artistic community, apps like Dall-E 2 have been controversial as artists worry both about their income as illustrators being affected and the possibility their work is being stolen to feed the neural networks."