The conversation today is not really about PhotoDNA (checking image hashes against known bad list). That ship has sailed and most large tech companies already d

The conversation today is not really about PhotoDNA (checking image hashes against known bad list). That ship has sailed and most large tech companies already do it. Apple will do it one way or another. It’s a good way to fight the sharing of child porn, which is why it is so widely adopted. The question is whether it is worse to do it on-device, than on the server. That’s what Apple actually announced. I suspect Apple thought doing it on-device would be better for privacy. But it feels like a loss of control. If it’s on the server, then I can choose to not upload and avoid the technology (and its potential for political abuse). If it’s on my locked and managed mobile device, I have basically no control over when or which images are getting checked, for what.